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-rw-r--r--libc/stdlib/malloc/malloc.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/libc/stdlib/malloc/malloc.h b/libc/stdlib/malloc/malloc.h
index c66778eeb..e5010d49b 100644
--- a/libc/stdlib/malloc/malloc.h
+++ b/libc/stdlib/malloc/malloc.h
@@ -136,8 +136,8 @@ typedef pthread_mutex_t malloc_mutex_t;
things will break if these multiple calls are interleaved with another
thread's use of sbrk!). */
extern malloc_mutex_t __malloc_sbrk_lock;
-# define __malloc_lock_sbrk() pthread_mutex_lock (&__malloc_sbrk_lock)
-# define __malloc_unlock_sbrk() pthread_mutex_unlock (&__malloc_sbrk_lock)
+# define __malloc_lock_sbrk() __pthread_mutex_lock (&__malloc_sbrk_lock)
+# define __malloc_unlock_sbrk() __pthread_mutex_unlock (&__malloc_sbrk_lock)
# endif /* MALLOC_USE_SBRK */
#else /* !__UCLIBC_HAS_THREADS__ */