diff --git a/Makefile b/Makefile
index 557293ea8..709fab96c 100644
--- a/Makefile
+++ b/Makefile
@@ -165,7 +165,7 @@ endif
 
 $(CRENGINELIBS):
 	cd $(KPVCRLIGDIR) && rm -rf CMakeCache.txt CMakeFiles && \
-		CC="$(CC)" CXX="$(CXX)" cmake . && \
+		CFLAGS="$(CFLAGS)" CC="$(CC)" CXX="$(CXX)" cmake . && \
 		make
 
 $(LUALIB):