diff --git a/.github/workflows/pr-compile-check.yaml b/.github/workflows/pr-compile-check.yaml
index 0e0133f78b5..84f23e491aa 100644
--- a/.github/workflows/pr-compile-check.yaml
+++ b/.github/workflows/pr-compile-check.yaml
@@ -91,6 +91,7 @@ jobs:
 
       - name: Compile w/ CXX support
         run: |
+          export CXX=/bin/false
           export nparallel=$(( $(getconf _NPROCESSORS_ONLN) > 8 ? 8 : $(getconf _NPROCESSORS_ONLN) ))
           cmake ../
           make -j $nparallel