diff --git a/lib/libc/include/libc_private.h b/lib/libc/include/libc_private.h
index 85674ab3c872..019a271ff610 100644
--- a/lib/libc/include/libc_private.h
+++ b/lib/libc/include/libc_private.h
@@ -415,6 +415,11 @@ void __libc_map_stacks_exec(void);
 void	_pthread_cancel_enter(int);
 void	_pthread_cancel_leave(int);
 
+struct _pthread_cleanup_info;
+void	___pthread_cleanup_push_imp(void (*)(void *), void *,
+	    struct _pthread_cleanup_info *);
+void	___pthread_cleanup_pop_imp(int);
+
 void __throw_constraint_handler_s(const char * restrict msg, int error);
 
 #endif /* _LIBC_PRIVATE_H_ */
diff --git a/lib/libc/stdio/local.h b/lib/libc/stdio/local.h
index 5c70b73d72b4..176b55aa2fa0 100644
--- a/lib/libc/stdio/local.h
+++ b/lib/libc/stdio/local.h
@@ -148,11 +148,11 @@ void __stdio_cancel_cleanup(void *);
 		struct _pthread_cleanup_info __cleanup_info__;		\
 		if (__isthreaded) {					\
 			_FLOCKFILE(fp);					\
-			__pthread_cleanup_push_imp(			\
+			___pthread_cleanup_push_imp(			\
 			    __stdio_cancel_cleanup, (fp), 		\
 			    &__cleanup_info__);				\
 		} else {						\
-			__pthread_cleanup_push_imp(			\
+			___pthread_cleanup_push_imp(			\
 			    __stdio_cancel_cleanup, NULL, 		\
 			    &__cleanup_info__);				\
 		}							\
@@ -160,7 +160,7 @@ void __stdio_cancel_cleanup(void *);
 #define	FUNLOCKFILE_CANCELSAFE()					\
 			(void)0;					\
 		}							\
-		__pthread_cleanup_pop_imp(1);				\
+		___pthread_cleanup_pop_imp(1);				\
 	}
 
 #endif /* _STDIO_LOCAL_H */