diff --git a/libc/bionic/sys_statvfs.cpp b/libc/bionic/sys_statvfs.cpp
index b3a0aca..3a05c3f 100644
--- a/libc/bionic/sys_statvfs.cpp
+++ b/libc/bionic/sys_statvfs.cpp
@@ -17,7 +17,7 @@
 #include <sys/statfs.h>
 #include <sys/statvfs.h>
 
-static __inline void __bionic_statfs_to_statvfs(const struct statfs* src, struct statvfs* dst) {
+static inline void __bionic_statfs_to_statvfs(const struct statfs* src, struct statvfs* dst) {
   dst->f_bsize = src->f_bsize;
   dst->f_frsize = src->f_frsize;
   dst->f_blocks = src->f_blocks;
diff --git a/libc/dns/resolv/res_cache.c b/libc/dns/resolv/res_cache.c
index f4c590f..d6416e5 100644
--- a/libc/dns/resolv/res_cache.c
+++ b/libc/dns/resolv/res_cache.c
@@ -1166,14 +1166,14 @@
     }
 }
 
-static __inline__ void
+static inline void
 entry_mru_remove( Entry*  e )
 {
     e->mru_prev->mru_next = e->mru_next;
     e->mru_next->mru_prev = e->mru_prev;
 }
 
-static __inline__ void
+static inline void
 entry_mru_add( Entry*  e, Entry*  list )
 {
     Entry*  first = list->mru_next;
diff --git a/libc/include/android/api-level.h b/libc/include/android/api-level.h
index 77ec653..113897c 100644
--- a/libc/include/android/api-level.h
+++ b/libc/include/android/api-level.h
@@ -191,7 +191,7 @@
 #if __ANDROID_API__ < 29
 
 /* android_get_device_api_level is a static inline before API level 29. */
-#define __BIONIC_GET_DEVICE_API_LEVEL_INLINE static __inline
+#define __BIONIC_GET_DEVICE_API_LEVEL_INLINE static inline
 #include <bits/get_device_api_level_inlines.h>
 #undef __BIONIC_GET_DEVICE_API_LEVEL_INLINE
 
diff --git a/libc/include/android/legacy_stdlib_inlines.h b/libc/include/android/legacy_stdlib_inlines.h
index f0985fe..0ca1022 100644
--- a/libc/include/android/legacy_stdlib_inlines.h
+++ b/libc/include/android/legacy_stdlib_inlines.h
@@ -38,15 +38,15 @@
 
 __BEGIN_DECLS
 
-static __inline double strtod_l(const char* _Nonnull __s, char* _Nullable * _Nullable __end_ptr, locale_t _Nonnull __l) {
+static inline double strtod_l(const char* _Nonnull __s, char* _Nullable * _Nullable __end_ptr, locale_t _Nonnull __l) {
   return strtod(__s, __end_ptr);
 }
 
-static __inline float strtof_l(const char* _Nonnull __s, char* _Nullable * _Nullable __end_ptr, locale_t _Nonnull __l) {
+static inline float strtof_l(const char* _Nonnull __s, char* _Nullable * _Nullable __end_ptr, locale_t _Nonnull __l) {
   return strtof(__s, __end_ptr);
 }
 
-static __inline long strtol_l(const char* _Nonnull __s, char* _Nullable * _Nullable __end_ptr, int __base, locale_t _Nonnull __l) {
+static inline long strtol_l(const char* _Nonnull __s, char* _Nullable * _Nullable __end_ptr, int __base, locale_t _Nonnull __l) {
   return strtol(__s, __end_ptr, __base);
 }
 
diff --git a/libc/include/android/legacy_termios_inlines.h b/libc/include/android/legacy_termios_inlines.h
index a816b40..e557525 100644
--- a/libc/include/android/legacy_termios_inlines.h
+++ b/libc/include/android/legacy_termios_inlines.h
@@ -39,14 +39,14 @@
 #include <sys/ioctl.h>
 #include <sys/types.h>
 
-#define __BIONIC_TERMIOS_INLINE static __inline
+#define __BIONIC_TERMIOS_INLINE static inline
 #include <bits/termios_inlines.h>
 
 #endif
 
 #if __ANDROID_API__ < 35
 
-#define __BIONIC_TERMIOS_WINSIZE_INLINE static __inline
+#define __BIONIC_TERMIOS_WINSIZE_INLINE static inline
 #include <bits/termios_winsize_inlines.h>
 
 #endif
diff --git a/libc/include/android/legacy_threads_inlines.h b/libc/include/android/legacy_threads_inlines.h
index c614cd0..06e7438 100644
--- a/libc/include/android/legacy_threads_inlines.h
+++ b/libc/include/android/legacy_threads_inlines.h
@@ -32,7 +32,7 @@
 
 #if __ANDROID_API__ < 30
 
-#define __BIONIC_THREADS_INLINE static __inline
+#define __BIONIC_THREADS_INLINE static inline
 #include <bits/threads_inlines.h>
 
 #endif
diff --git a/libc/include/android/legacy_unistd_inlines.h b/libc/include/android/legacy_unistd_inlines.h
index 4a5206b..ac9f3b3 100644
--- a/libc/include/android/legacy_unistd_inlines.h
+++ b/libc/include/android/legacy_unistd_inlines.h
@@ -32,7 +32,7 @@
 
 #if __ANDROID_API__ < 28
 
-#define __BIONIC_SWAB_INLINE static __inline
+#define __BIONIC_SWAB_INLINE static inline
 #include <bits/swab.h>
 
 #endif
diff --git a/libc/include/bits/stdatomic.h b/libc/include/bits/stdatomic.h
index fe3d68d..bd94b2d 100644
--- a/libc/include/bits/stdatomic.h
+++ b/libc/include/bits/stdatomic.h
@@ -138,11 +138,11 @@
  * 7.17.4 Fences.
  */
 
-static __inline void atomic_thread_fence(memory_order __order __attribute__((unused))) {
+static inline void atomic_thread_fence(memory_order __order __attribute__((unused))) {
 	__c11_atomic_thread_fence(__order);
 }
 
-static __inline void atomic_signal_fence(memory_order __order __attribute__((unused))) {
+static inline void atomic_signal_fence(memory_order __order __attribute__((unused))) {
 	__c11_atomic_signal_fence(__order);
 }
 
@@ -269,18 +269,18 @@
 
 #define	ATOMIC_FLAG_INIT		{ ATOMIC_VAR_INIT(false) }
 
-static __inline bool atomic_flag_test_and_set_explicit(volatile atomic_flag * _Nonnull __object, memory_order __order) {
+static inline bool atomic_flag_test_and_set_explicit(volatile atomic_flag * _Nonnull __object, memory_order __order) {
 	return (atomic_exchange_explicit(&__object->__flag, 1, __order));
 }
 
-static __inline void atomic_flag_clear_explicit(volatile atomic_flag * _Nonnull __object, memory_order __order) {
+static inline void atomic_flag_clear_explicit(volatile atomic_flag * _Nonnull __object, memory_order __order) {
 	atomic_store_explicit(&__object->__flag, 0, __order);
 }
 
-static __inline bool atomic_flag_test_and_set(volatile atomic_flag * _Nonnull __object) {
+static inline bool atomic_flag_test_and_set(volatile atomic_flag * _Nonnull __object) {
 	return (atomic_flag_test_and_set_explicit(__object, memory_order_seq_cst));
 }
 
-static __inline void atomic_flag_clear(volatile atomic_flag * _Nonnull __object) {
+static inline void atomic_flag_clear(volatile atomic_flag * _Nonnull __object) {
 	atomic_flag_clear_explicit(__object, memory_order_seq_cst);
 }
diff --git a/libc/include/bits/swab.h b/libc/include/bits/swab.h
index 9591c2e..ebb7c74 100644
--- a/libc/include/bits/swab.h
+++ b/libc/include/bits/swab.h
@@ -33,7 +33,7 @@
 #include <sys/types.h>
 
 #if !defined(__BIONIC_SWAB_INLINE)
-#define __BIONIC_SWAB_INLINE static __inline
+#define __BIONIC_SWAB_INLINE static inline
 #endif
 
 __BEGIN_DECLS
diff --git a/libc/include/bits/termios_inlines.h b/libc/include/bits/termios_inlines.h
index a884b59..702f433 100644
--- a/libc/include/bits/termios_inlines.h
+++ b/libc/include/bits/termios_inlines.h
@@ -37,7 +37,7 @@
 #include <linux/termios.h>
 
 #if !defined(__BIONIC_TERMIOS_INLINE)
-#define __BIONIC_TERMIOS_INLINE static __inline
+#define __BIONIC_TERMIOS_INLINE static inline
 #endif
 
 __BEGIN_DECLS
@@ -45,7 +45,7 @@
 // Supporting separate input and output speeds would require an ABI
 // change for `struct termios`.
 
-static __inline speed_t cfgetspeed(const struct termios* _Nonnull s) {
+static inline speed_t cfgetspeed(const struct termios* _Nonnull s) {
   return __BIONIC_CAST(static_cast, speed_t, s->c_cflag & CBAUD);
 }
 
diff --git a/libc/include/bits/termios_winsize_inlines.h b/libc/include/bits/termios_winsize_inlines.h
index ae246e4..0d188e7 100644
--- a/libc/include/bits/termios_winsize_inlines.h
+++ b/libc/include/bits/termios_winsize_inlines.h
@@ -36,7 +36,7 @@
 #include <linux/termios.h>
 
 #if !defined(__BIONIC_TERMIOS_WINSIZE_INLINE)
-#define __BIONIC_TERMIOS_WINSIZE_INLINE static __inline
+#define __BIONIC_TERMIOS_WINSIZE_INLINE static inline
 #endif
 
 __BEGIN_DECLS
diff --git a/libc/include/bits/threads_inlines.h b/libc/include/bits/threads_inlines.h
index 5878e0a..074e1ca 100644
--- a/libc/include/bits/threads_inlines.h
+++ b/libc/include/bits/threads_inlines.h
@@ -38,7 +38,7 @@
 
 __BEGIN_DECLS
 
-static __inline int __bionic_thrd_error(int __pthread_code) {
+static inline int __bionic_thrd_error(int __pthread_code) {
   switch (__pthread_code) {
     case 0: return 0;
     case ENOMEM: return thrd_nomem;
diff --git a/libc/include/ctype.h b/libc/include/ctype.h
index c15ee56..5cad412 100644
--- a/libc/include/ctype.h
+++ b/libc/include/ctype.h
@@ -42,7 +42,7 @@
  * also provide actual symbols for any caller that needs them.
  */
 #if !defined(__BIONIC_CTYPE_INLINE)
-#define __BIONIC_CTYPE_INLINE static __inline
+#define __BIONIC_CTYPE_INLINE static inline
 #endif
 
 /** Internal implementation detail. Do not use. */
diff --git a/libc/include/strings.h b/libc/include/strings.h
index 2f4f764..6ec3bdf 100644
--- a/libc/include/strings.h
+++ b/libc/include/strings.h
@@ -50,7 +50,7 @@
 #include <bits/strcasecmp.h>
 
 #if !defined(__BIONIC_STRINGS_INLINE)
-#define __BIONIC_STRINGS_INLINE static __inline
+#define __BIONIC_STRINGS_INLINE static inline
 #endif
 
 #undef ffs
@@ -61,13 +61,13 @@
 
 /** Deprecated. Use memmove() instead. */
 #define bcopy(b1, b2, len) __bionic_bcopy((b1), (b2), (len))
-static __inline__ __always_inline void __bionic_bcopy(const void* _Nonnull b1, void* _Nonnull b2, size_t len) {
+static inline __always_inline void __bionic_bcopy(const void* _Nonnull b1, void* _Nonnull b2, size_t len) {
   __builtin_memmove(b2, b1, len);
 }
 
 /** Deprecated. Use memset() instead. */
 #define bzero(b, len) __bionic_bzero((b), (len))
-static __inline__ __always_inline void __bionic_bzero(void* _Nonnull b, size_t len) {
+static inline __always_inline void __bionic_bzero(void* _Nonnull b, size_t len) {
   __builtin_memset(b, 0, len);
 }
 
diff --git a/libc/include/sys/cdefs.h b/libc/include/sys/cdefs.h
index a8fb624..a19ce26 100644
--- a/libc/include/sys/cdefs.h
+++ b/libc/include/sys/cdefs.h
@@ -260,7 +260,7 @@
  * them available externally. FORTIFY'ed functions try to be as close to possible as 'invisible';
  * having stack protectors detracts from that (b/182948263).
  */
-#  define __BIONIC_FORTIFY_INLINE static __inline__ __attribute__((no_stack_protector)) \
+#  define __BIONIC_FORTIFY_INLINE static inline __attribute__((no_stack_protector)) \
       __always_inline __VERSIONER_FORTIFY_INLINE
 /*
  * We should use __BIONIC_FORTIFY_VARIADIC instead of __BIONIC_FORTIFY_INLINE
@@ -268,7 +268,7 @@
  * The __always_inline attribute is useless, misleading, and could trigger
  * clang compiler bug to incorrectly inline variadic functions.
  */
-#  define __BIONIC_FORTIFY_VARIADIC static __inline__
+#  define __BIONIC_FORTIFY_VARIADIC static inline
 /* Error functions don't have bodies, so they can just be static. */
 #  define __BIONIC_ERROR_FUNCTION_VISIBILITY static __attribute__((unused))
 #else
@@ -327,7 +327,7 @@
 #define __size_mul_overflow(a, b, result) __builtin_umul_overflow(a, b, result)
 #endif
 #else
-extern __inline__ __always_inline __attribute__((gnu_inline))
+extern inline __always_inline __attribute__((gnu_inline))
 int __size_mul_overflow(__SIZE_TYPE__ a, __SIZE_TYPE__ b, __SIZE_TYPE__ *result) {
     *result = a * b;
     static const __SIZE_TYPE__ mul_no_overflow = 1UL << (sizeof(__SIZE_TYPE__) * 4);
diff --git a/libc/kernel/tools/cpp.py b/libc/kernel/tools/cpp.py
index 08b786a..0fd6e46 100755
--- a/libc/kernel/tools/cpp.py
+++ b/libc/kernel/tools/cpp.py
@@ -2345,11 +2345,11 @@
 
     def test_function_keep_attribute_structs(self):
         text = """\
-static __inline__ struct some_struct1 * function(struct some_struct2 * e) {
+static inline struct some_struct1 * function(struct some_struct2 * e) {
 }
 """
         expected = """\
-static __inline__ struct some_struct1 * function(struct some_struct2 * e) {
+static inline struct some_struct1 * function(struct some_struct2 * e) {
 }
 """
         self.assertEqual(self.parse(text, set(["function"])), expected)