diff --git a/src/libresrc/Makefile b/src/libresrc/Makefile
index c4ea68a48..644185673 100644
--- a/src/libresrc/Makefile
+++ b/src/libresrc/Makefile
@@ -8,18 +8,21 @@ resrc_OBJ := \
 	$(d)default_config.o \
 	$(d)libresrc.o
 
-$(resrc_OBJ): $(d)default_config.h $(d)bitmap.h
+$(resrc_OBJ): $(d)default_config.h $(d)bitmap.h $(d)default_config.cpp $(d)bitmap.cpp
 
 RESPACK := cd $(TOP)src/libresrc; $(TOP)vendor/luajit/src/host/minilua $(TOP)tools/respack.lua
 
-$(d)bitmap.cpp $(d)bitmap.h: $(TOP)tools/respack.lua $(d)../bitmaps/button
+$(d)bitmap.cpp: $(d)bitmap.h
+$(d)default_config.cpp: $(d)default_config.h
+
+$(d)bitmap.h: $(TOP)tools/respack.lua $(d)../bitmaps/button
 	$(RESPACK) ../bitmaps/manifest.respack bitmap.cpp bitmap.h
 
 ifeq (yes, $(BUILD_DARWIN))
-$(d)default_config.cpp $(d)default_config.h: $(TOP)tools/respack.lua $(d)*.json $(d)osx/*.json
+$(d)default_config.h: $(TOP)tools/respack.lua $(d)*.json $(d)osx/*.json
 	$(RESPACK) manifest_osx.respack default_config.cpp default_config.h
 else
-$(d)default_config.cpp $(d)default_config.h: $(TOP)tools/respack.lua $(d)*.json
+$(d)default_config.h: $(TOP)tools/respack.lua $(d)*.json
 	$(RESPACK) manifest.respack default_config.cpp default_config.h
 endif