diff --git a/docker/ci/dockerfiles/current/build.al2.opensearch.x64.arm64.dockerfile b/docker/ci/dockerfiles/current/build.al2.opensearch.x64.arm64.dockerfile
index 0a3080cdc8..58a27f9901 100644
--- a/docker/ci/dockerfiles/current/build.al2.opensearch.x64.arm64.dockerfile
+++ b/docker/ci/dockerfiles/current/build.al2.opensearch.x64.arm64.dockerfile
@@ -105,6 +105,7 @@ RUN yum install -y gcc10* && \
     update-alternatives --install /usr/bin/gcc gcc $(which gcc10-gcc) 1 && \
     update-alternatives --install /usr/bin/g++ g++ $(which gcc10-g++) 1
 ENV FC=gcc10-gfortran
+ENV CXX=g++
 
 # Change User
 USER $CONTAINER_USER