diff --git a/make/rules.mk b/make/rules.mk
index 05540589..583947d4 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -219,7 +219,7 @@ strip.done: $(EXE_ALL)
 	$(CC) -M $(BUILD_CPPFLAGS) $(DEPEND_CPPFLAGS) $< -o $@
 
 .%.o.dep.mk: %.c $(BUILD_HDR)
-	$(CC) -M $(BUILD_CPPFLAGS) $(DEPEND_CPPFLAGS) $< -o $@
+	$(CC) -M $(BUILD_CFLAGS) $(DEPEND_CPPFLAGS) $< -o $@
 
 ifeq ($(LIBTYPE),shared)
 $(SO_PREFIX)%.so: %.o