diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 5580d2a..ac6a8d0 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -19,7 +19,7 @@ on:
 env:
   TEST_HOST: ${{ secrets.TEST_HOST }}
   TEST_FROM: ${{ secrets.TEST_USER }}
-  TEST_ALLOW_SEND: 1
+  TEST_ALLOW_SEND: "1"
   TEST_SMTPAUTH_USER: ${{ secrets.TEST_USER }}
   TEST_SMTPAUTH_PASS: ${{ secrets.TEST_PASS }}
   TEST_SMTPAUTH_TYPE: "LOGIN"