diff --git a/Makefile b/Makefile
index 17b93a55..c862101d 100644
--- a/Makefile
+++ b/Makefile
@@ -617,6 +617,9 @@ SHA1SUM = sha1sum
 all: $(EXE)
 
 ifeq ($(EXTERNAL_TEXTURES),1)
+# depend on resources as well
+all: res
+
 # prepares the resource folder for external data
 res: $(EXE)
 	@mkdir -p $(BUILD_DIR)/res