diff --git a/.github/workflows/integrate.yml b/.github/workflows/integrate.yml
index 825cb8c..fd76cea 100644
--- a/.github/workflows/integrate.yml
+++ b/.github/workflows/integrate.yml
@@ -57,6 +57,8 @@ jobs:
   test_size:
     name: Test size
     runs-on: ubuntu-latest
+    env:
+      SIZE: 4
     steps:
       - uses: actions/checkout@v3
 
@@ -64,7 +66,7 @@ jobs:
         id: call
         uses: ./
         with:
-          size: 4
+          size: ${{ env.SIZE }}
 
       - name: Verify FS
         id: verify
@@ -73,6 +75,7 @@ jobs:
           ${{ env.TEST_CONTENT }}
           EOF
           test "$(cat "${{  steps.call.outputs.mnt }}/content")" = "${{ env.TEST_CONTENT }}"
+          mount | grep ${{ steps.call.outputs.mnt }} | grep "size=$((${{ env.SIZE }} * 1024))"
         continue-on-error: true
 
       - name: Cleanup
diff --git a/action.yml b/action.yml
index 20357df..97709c2 100644
--- a/action.yml
+++ b/action.yml
@@ -29,7 +29,7 @@ runs:
         sudo mkdir -p "${MNT}" \
         && echo ":heavy_check_mark: Temp FS mount point creation succeeded" >> $GITHUB_STEP_SUMMARY \
         || { echo ":x: Temp FS  mount point creation failed" >> $GITHUB_STEP_SUMMARY; exit 1; }
-        sudo mount -o size=${{ inputs.size }},uid=$(id -u) -t tmpfs tmpfs "${MNT}" \
+        sudo mount -o size=${{ inputs.size }}M,uid=$(id -u) -t tmpfs tmpfs "${MNT}" \
         && echo ":heavy_check_mark: Temp FS mount operation succeeded" >> $GITHUB_STEP_SUMMARY \
         || { echo ":x: Temp FS mount operation failed" >> $GITHUB_STEP_SUMMARY; exit 1; } 
         echo "uuid=${UUID}" >> $GITHUB_OUTPUT