diff --git a/libc/bionic/ndk_cruft.cpp b/libc/bionic/ndk_cruft.cpp
index 4bbb2c1..dfd0e68 100644
--- a/libc/bionic/ndk_cruft.cpp
+++ b/libc/bionic/ndk_cruft.cpp
@@ -340,10 +340,17 @@
 }
 
 // In L we added a public pthread_gettid_np, but some apps were using the private API.
-pid_t __pthread_gettid(pthread_t t) {
+pid_t __pthread_gettid_libc(pthread_t t) {
   return pthread_gettid_np(t);
 }
 
+pid_t __pthread_gettid_libc_private(pthread_t t) {
+  return pthread_gettid_np(t);
+}
+
+__asm__(".symver __pthread_gettid_libc,__pthread_gettid@LIBC");
+__asm__(".symver __pthread_gettid_libc_private,__pthread_gettid@@LIBC_PRIVATE");
+
 // Older versions of apportable used dlmalloc directly instead of malloc,
 // so export this compatibility shim that simply calls malloc.
 void* dlmalloc(size_t size) {
diff --git a/libc/libc.arm.map b/libc/libc.arm.map
index 60ca598..b9d9f0b 100644
--- a/libc/libc.arm.map
+++ b/libc/libc.arm.map
@@ -122,6 +122,7 @@
     __pselect6; # arm x86 mips
     __pthread_cleanup_pop;
     __pthread_cleanup_push;
+    __pthread_gettid; # arm x86 mips nobrillo
     __ptrace; # arm x86 mips
     __putlong;
     __putshort;
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index a91c4d7..4c11ae3 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -123,6 +123,7 @@
     __pselect6; # arm x86 mips
     __pthread_cleanup_pop;
     __pthread_cleanup_push;
+    __pthread_gettid; # arm x86 mips nobrillo
     __ptrace; # arm x86 mips
     __putlong;
     __putshort;
diff --git a/libc/libc.mips.map b/libc/libc.mips.map
index df0e4b7..b011410 100644
--- a/libc/libc.mips.map
+++ b/libc/libc.mips.map
@@ -120,6 +120,7 @@
     __pselect6; # arm x86 mips
     __pthread_cleanup_pop;
     __pthread_cleanup_push;
+    __pthread_gettid; # arm x86 mips nobrillo
     __ptrace; # arm x86 mips
     __putlong;
     __putshort;
diff --git a/libc/libc.x86.map b/libc/libc.x86.map
index 5e8fcb1..5b96c2f 100644
--- a/libc/libc.x86.map
+++ b/libc/libc.x86.map
@@ -120,6 +120,7 @@
     __pselect6; # arm x86 mips
     __pthread_cleanup_pop;
     __pthread_cleanup_push;
+    __pthread_gettid; # arm x86 mips nobrillo
     __ptrace; # arm x86 mips
     __putlong;
     __putshort;