diff --git a/test.sh b/test.sh
index 83f373d..7407e84 100755
--- a/test.sh
+++ b/test.sh
@@ -146,7 +146,7 @@ for dist in stable testing unstable; do
 		fi
 		sudo rm debian-$dist-debootstrap/var/lib/dpkg/lock
 		# introduced in dpkg 1.19.1
-		if [ "$dist" = "unstable" ]; then
+		if [ "$dist" != "stable" ]; then
 			sudo rm debian-$dist-debootstrap/var/lib/dpkg/lock-frontend
 		fi