diff --git a/cc/cc_test.go b/cc/cc_test.go
index 2951b5a..fb24624 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -4041,7 +4041,7 @@
 	conly := []string{"-fPIC", "${config.CommonGlobalConlyflags}"}
 	cppOnly := []string{"-fPIC", "${config.CommonGlobalCppflags}", "${config.DeviceGlobalCppflags}", "${config.ArmCppflags}"}
 
-	cflags := []string{"-Wall", "-Werror", "-std=candcpp"}
+	cflags := []string{"-Werror", "-std=candcpp"}
 	cstd := []string{"-std=gnu11", "-std=conly"}
 	cppstd := []string{"-std=gnu++17", "-std=cpp", "-fno-rtti"}