diff --git a/action.yml b/action.yml
index e7c1d35..f1f210d 100644
--- a/action.yml
+++ b/action.yml
@@ -121,10 +121,11 @@ runs:
       id: codecov-upload
       shell: bash
       run: |
+        echo $CODECOV_OS
         gpg --import ./dist/pgp_keys.asc
-        curl -Os https://cli.codecov.io/latest/${CODECOV_OS}/codecov
-        curl -Os https://cli.codecov.io/latest/${CODECOV_OS}/codecov.SHA256SUM
-        curl -Os https://cli.codecov.io/latest/${CODECOV_OS}/codecov.SHA256SUM.sig
+        curl -Os https://cli.codecov.io/latest/$CODECOV_OS/codecov
+        curl -Os https://cli.codecov.io/latest/$CODECOV_OS/codecov.SHA256SUM
+        curl -Os https://cli.codecov.io/latest/$CODECOV_OS/codecov.SHA256SUM.sig
         gpg --verify codecov.SHA256SUM.sig codecov.SHA256SUM
 
         shasum -a 256 -c codecov.SHA256SUM