diff --git a/libc/include/pthread.h b/libc/include/pthread.h
index f1085a8..2df9b74 100644
--- a/libc/include/pthread.h
+++ b/libc/include/pthread.h
@@ -252,7 +252,7 @@
 pthread_t pthread_self(void) __pure2;
 
 #if defined(__USE_GNU)
-int pthread_getname_np(pthread_t, char*, size_t) __nonnull((2)) __INTRODUCED_IN(25);
+int pthread_getname_np(pthread_t, char*, size_t) __nonnull((2)) __INTRODUCED_IN_FUTURE;
 #endif
 /* TODO: this should be __USE_GNU too. */
 int pthread_setname_np(pthread_t, const char*) __nonnull((2));