diff --git a/kpatch-build/Makefile b/kpatch-build/Makefile
index 232b336..0db5643 100644
--- a/kpatch-build/Makefile
+++ b/kpatch-build/Makefile
@@ -1,6 +1,7 @@
 include ../Makefile.inc
 
-CFLAGS += -MMD -MP -I../kmod/patch -Iinsn -Wall -Wsign-compare -g -Werror
+CFLAGS += -MMD -MP -I../kmod/patch -Iinsn -Wall -Wsign-compare \
+	  -Wconversion -Wno-sign-conversion -g -Werror
 LDLIBS = -lelf
 
 TARGETS = create-diff-object create-klp-module create-kpatch-module