diff --git a/kpatch-build/kpatch-build b/kpatch-build/kpatch-build
index 9485fb7..f4a9013 100755
--- a/kpatch-build/kpatch-build
+++ b/kpatch-build/kpatch-build
@@ -248,11 +248,13 @@ cd "$TEMPDIR/orig"
 FILES="$(find * -type f)"
 cd "$TEMPDIR"
 mkdir output
+changed=0
 for i in $FILES; do
 	mkdir -p "output/$(dirname $i)"
 	"$TOOLSDIR"/create-diff-object "orig/$i" "patched/$i" "output/$i" 2>&1 |tee -a "$LOGFILE"
-	[[ "${PIPESTATUS[0]}" -eq 0 ]] || die
+	[[ "${PIPESTATUS[0]}" -eq 0 ]] && changed=$((changed+1))
 done
+[[ "$changed" -gt 0 ]] || die "Fatal: all generated objects has no changed function."
 
 echo "Building patch module: kpatch-$PATCHNAME.ko"
 cp "$OBJDIR/.config" "$SRCDIR"