diff --git a/appveyor.yml b/appveyor.yml
index 34dc4519b..740a19b7b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -35,7 +35,7 @@ before_test:
     SET PGUSER=postgres
     createdb test_db
     psql -U postgres test_db < extensions\database\tests\conf\travis-pgsql.sql
-    mkdir packaging/target
+    mkdir packaging\target
 
     copy extensions\database\tests\conf\appveyor_tests.xml extensions\database\tests\conf\tests.xml
 - cmd: |-