diff --git a/.github/actions/quic-interop-runner/action.yml b/.github/actions/quic-interop-runner/action.yml
index ef4865bde6..cdcb7a36bd 100644
--- a/.github/actions/quic-interop-runner/action.yml
+++ b/.github/actions/quic-interop-runner/action.yml
@@ -93,7 +93,7 @@ runs:
         echo '[**QUIC Interop Runner**](https://github.com/quic-interop/quic-interop-runner)' >> comment
         echo '' >> comment
         # Ignore all, but table, which starts with "|:--".
-        cat quic-interop-runner/summary | awk '/^\|:--/{flag=1} flag' >> comment
+        grep -A 999999 '^|:--' quic-interop-runner/summary >> comment
         echo '' >> comment
       shell: bash