diff --git a/libc/include/sys/personality.h b/libc/include/sys/personality.h
index cea0bf8..9eb992f 100644
--- a/libc/include/sys/personality.h
+++ b/libc/include/sys/personality.h
@@ -43,9 +43,7 @@
  * process' personality.
  *
  * Returns the previous persona on success, and returns -1 and sets `errno` on failure.
- *
- * Available since API level 15.
  */
-int personality(unsigned int __persona) __INTRODUCED_IN(15);
+int personality(unsigned int __persona);
 
 __END_DECLS
diff --git a/libc/include/sys/stat.h b/libc/include/sys/stat.h
index 84a5015..79113b6 100644
--- a/libc/include/sys/stat.h
+++ b/libc/include/sys/stat.h
@@ -185,8 +185,7 @@
 
 #define UTIME_NOW  ((1L << 30) - 1L)
 #define UTIME_OMIT ((1L << 30) - 2L)
-int utimensat(int __dir_fd, const char* __path, const struct timespec __times[2], int __flags)
-  __INTRODUCED_IN(12);
+int utimensat(int __dir_fd, const char* __path, const struct timespec __times[2], int __flags);
 int futimens(int __dir_fd, const struct timespec __times[2]) __INTRODUCED_IN(19);
 
 __END_DECLS
diff --git a/libc/include/sys/system_properties.h b/libc/include/sys/system_properties.h
index f469599..a2e1923 100644
--- a/libc/include/sys/system_properties.h
+++ b/libc/include/sys/system_properties.h
@@ -43,7 +43,7 @@
 /*
  * Sets system property `name` to `value`, creating the system property if it doesn't already exist.
  */
-int __system_property_set(const char* __name, const char* __value) __INTRODUCED_IN(12);
+int __system_property_set(const char* __name, const char* __value);
 
 /*
  * Returns a `prop_info` corresponding system property `name`, or nullptr if it doesn't exist.