--- a/test/snake/Makefile	Fri Apr 25 23:06:23 2025 +0200
+++ b/test/snake/Makefile	Sun Apr 27 13:27:27 2025 +0200
@@ -27,7 +27,7 @@
 
 BUILD_DIR=$(srcdir)/build/test
 LIB_ASCENSION=$(srcdir)/build/lib/libascension.a
-CFLAGS += -I$(srcdir)/src -DTEST_BUILD
+CFLAGS += -I$(srcdir)/src $(CPPFLAGS)
 
 all: $(BUILD_DIR) $(BUILD_DIR)/snake FORCE
 	@echo "Demo game 'snake' successfully built."