diff --git a/checkpkg b/checkpkg
index 38e33ad05dc01143d64535671532adf7f1d13797..e1f8b8beedbb5496b4ff469cd556ca92273cf66c 100755
--- a/checkpkg
+++ b/checkpkg
@@ -82,7 +82,7 @@ for _pkgname in ${pkgname[@]}; do
 	sort -o filelist-$_pkgname filelist-$_pkgname
 	sort -o filelist-$_pkgname-old filelist-$_pkgname-old
 
-	diff -u filelist-$_pkgname-old filelist-$_pkgname
+	sdiff -s filelist-$_pkgname-old filelist-$_pkgname
 
 	if diff filelist-$_pkgname-old filelist-$_pkgname | grep '\.so' > /dev/null 2>&1; then
 		mkdir -p pkg