diff --git a/build/post-build.sh b/build/post-build.sh
index 1f9c8fb..68e6fc9 100755
--- a/build/post-build.sh
+++ b/build/post-build.sh
@@ -53,6 +53,6 @@ fi
 if [ -d user ]; then
 	pg_prove -U $TEST_USER -d $TEST_DATABASE `find user/ -type f -name '*.sql'` || exit 1
 fi
-if [ -x dirty/run-dirty-tests.sql ]; then
-	( cd dirty; exec ./run-dirty-tests.sql ) || exit 1
+if [ -x dirty/run-dirty-tests.sh ]; then
+	( cd dirty; exec ./run-dirty-tests.sh ) || exit 1
 fi