diff --git a/.github/workflows/psi-svg.yml b/.github/workflows/psi-svg.yml
index f7e5ecf..2b5886a 100644
--- a/.github/workflows/psi-svg.yml
+++ b/.github/workflows/psi-svg.yml
@@ -24,7 +24,7 @@ jobs:
 
       - name: Run PSI-SVG
         run: |
-          mkdir -p ${PSI_SVG_OUTPUT_DIR}
+          mkdir -p $PSI_SVG_OUTPUT_DIR
           npx psi-svg $SITE_URL $PSI_SVG_OUTPUT_DIR/psi-desktop.svg --strategy=desktop
           npx psi-svg $SITE_URL $PSI_SVG_OUTPUT_DIR/psi-mobile.svg --strategy=mobile