diff --git a/minix/lib/libc/sys/fork.c b/minix/lib/libc/sys/fork.c
index bdbfb5470..5ad3da938 100644
--- a/minix/lib/libc/sys/fork.c
+++ b/minix/lib/libc/sys/fork.c
@@ -6,9 +6,14 @@
 #include <unistd.h>
 
 #ifdef __weak_alias
-__weak_alias(__fork, _fork)
+__weak_alias(fork, _fork)
+/* Allow libc to override with definition from pthread_atfork, while defining
+ * the symbol for libminc */
+__weak_alias(_fork, __fork)
 #endif
 
+pid_t __fork(void); /* LSC, quiet prototype not found warning. */
+
 pid_t __fork(void)
 {
   message m;