diff --git a/abuild.in b/abuild.in
index 25ae4e5..4fd739f 100755
--- a/abuild.in
+++ b/abuild.in
@@ -122,7 +122,7 @@ sanitycheck() {
 
 	for i in $install; do
 		local n=${i%.*}
-		local suff=${i#*.}
+		local suff=${i##*.}
 		case "$suff" in
 		pre-install|post-install|pre-upgrade|post-upgrade|pre-deinstall|post-deinstall);;
 		*) die "$i: unknown install script suffix"