diff --git a/.github/workflows/build-electron.yml b/.github/workflows/build-electron.yml
index 1e87cae3..827dd295 100644
--- a/.github/workflows/build-electron.yml
+++ b/.github/workflows/build-electron.yml
@@ -62,7 +62,7 @@ jobs:
     - name: build portable Electron app
       run: |
         $GITHUB_TOKEN = $Env:GITHUB_TOKEN
-        $INPUT_VERSION_E = $Env:INPUT_VERSION -replace '^([0-9.]+)E?(.*)', '$1E$2'
+        $INPUT_VERSION_E = $Env:INPUT_VERSION -replace '^(v[0-9.]+)E?(.*)', '$1E$2'
         ./scripts/Create-DraftRelease -buildonly -tag_name $INPUT_VERSION_E -portableonly -wingetprompt N
     - name: publish
       run: |