diff --git a/appveyor.yml b/appveyor.yml
index 0f566f936..8df08bc01 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -49,7 +49,7 @@ build_script:
       SET BUILD=yes &&
       ECHO "Skipping installer build on non-installer build matrix row"
     )
-  - IF [%BUILD]==[yes] (
+  - IF [%BUILD%]==[yes] (
       script\build.cmd --code-sign --compress-artifacts %BUILD_ARG%
     )