diff --git a/src/runtime/runtime-gdb_unix_test.go b/src/runtime/runtime-gdb_unix_test.go
index 2dc1e31e13f..23eb3e2362f 100644
--- a/src/runtime/runtime-gdb_unix_test.go
+++ b/src/runtime/runtime-gdb_unix_test.go
@@ -239,7 +239,7 @@ const coreCrashThreadSource = `
 package main
 
 /*
-#cgo CFLAGS: -g -O0 -Wall
+#cgo CFLAGS: -g -O0
 #include <stdio.h>
 #include <stddef.h>
 void trigger_crash()