diff --git a/build/exe.mk b/build/exe.mk
index 99af7d57..c931bfdd 100644
--- a/build/exe.mk
+++ b/build/exe.mk
@@ -84,7 +84,7 @@ $(RELEASE_PROGRAM) : $(RELEASE_OBJS)
 
 .PHONY : clean
 clean :
-	-rm -f *.o $(OBJPATH)/*/bin/$(PROGRAM_NAME)
+	-rm -f $(DEBUG_OBJS) $(RELEASE_OBJS) $(OBJPATH)/*/bin/$(PROGRAM_NAME)
 
 .PHONY : depend
 depend:
diff --git a/build/lib.mk b/build/lib.mk
index 644de4cc..bec4fcb5 100644
--- a/build/lib.mk
+++ b/build/lib.mk
@@ -106,7 +106,7 @@ endif
 
 .PHONY : clean
 clean :
-	-rm -f *.o $(OBJPATH)/*/lib/$(STATIC_LIB_NAME) $(OBJPATH)/*/lib/$(DYNAMIC_LIB_NAME) $(ORDINALS_H)
+	-rm -f $(DEBUG_OBJS) $(RELEASE_OBJS) $(OBJPATH)/*/lib/$(STATIC_LIB_NAME) $(OBJPATH)/*/lib/$(DYNAMIC_LIB_NAME) $(ORDINALS_H)
 
 .PHONY : depend
 depend: