diff --git a/checkpkg.in b/checkpkg.in
index 3bd22e4..4d2a905 100644
--- a/checkpkg.in
+++ b/checkpkg.in
@@ -73,9 +73,9 @@ for _pkgname in "${pkgname[@]}"; do
 
 	if diff "$TEMPDIR/filelist-$_pkgname"{-old,} | grep '\.so' &>/dev/null; then
 		mkdir -p "$TEMPDIR/pkg"
-		bsdtar -C "$TEMPDIR" xf ../"$pkgfile" #> /dev/null
+		bsdtar -x -C "$TEMPDIR" -f "$pkgfile" #> /dev/null
 		diff "$TEMPDIR/filelist-$_pkgname-old" "$TEMPDIR/filelist-$_pkgname" | awk '/>.*\.so/{$1 = ""; print $0}' | while read i; do
-			echo "${i}: " "$(objdump -p "$i" | grep SONAME)"
+			echo "${i}: " "$(objdump -p "$TEMPDIR/$i" | grep SONAME)"
 		done
 	else
 		msg "No soname differences for $_pkgname."