diff --git a/.github/workflows/e2e-tests-ios.yml b/.github/workflows/e2e-tests-ios.yml
index 7f7b1d5b..ac171056 100644
--- a/.github/workflows/e2e-tests-ios.yml
+++ b/.github/workflows/e2e-tests-ios.yml
@@ -28,7 +28,7 @@ jobs:
           path: |
             ${{ env.APP_PATH }}
             ${{ env.APP_PATH }}.dSYM
-          key: ${{ runner.os }}-${{ hashFiles('src/**', 'ios/**', ${{ env.EXAMPLE_SRC }}) }}
+          key: ${{ runner.os }}-${{ hashFiles(format('src/**', 'ios/**', ${{ env.EXAMPLE_SRC }})) }}
 
       - uses: actions/setup-node@v3
         if: steps.cache.outputs.cache-hit != 'true'