diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 83d0864356..e7e3aff2be 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -71,7 +71,7 @@ jobs:
     runs-on: ubuntu-18.04
     timeout-minutes: 30
     env:
-      VFLAGS: -cc tcc -cflags -bt10
+      VFLAGS: -cc tcc
     steps:
     - uses: actions/checkout@v2
     - name: Install dependencies