diff --git a/src/Makefile b/src/Makefile
index 77deb6640..6520f928c 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -179,6 +179,7 @@ ifeq ($(PRODUCTION),0)
 CFLAGS                  += -W
 CFLAGS                  += -Wall
 CFLAGS                  += -Wextra
+CFLAGS                  += -Wno-cast-function-type
 endif
 
 ## because LZMA SDK