diff --git a/images/bromite-build/pre-start.sh b/images/bromite-build/pre-start.sh
index d08cf0b..3f17a90 100644
--- a/images/bromite-build/pre-start.sh
+++ b/images/bromite-build/pre-start.sh
@@ -59,7 +59,7 @@ cd $WORKSPACE/
 git clone https://github.com/ninja-build/ninja.git -b v1.8.2
 cd ninja
 git apply $WORKSPACE/bromite-buildtools/ninja-one-target-for-compdb.patch
-./configure.py --bootstrap
+CXX=clang++ ./configure.py --bootstrap
 
 echo -e ${RED} -------- download clang indexer ${NC}
 cd $WORKSPACE/