diff --git a/Dockerfile.centos7 b/Dockerfile.centos7
index 298e5ae..8c0a022 100644
--- a/Dockerfile.centos7
+++ b/Dockerfile.centos7
@@ -43,7 +43,8 @@ RUN sed -i 's/^mirrorlist=/#mirrorlist=/g' /etc/yum.repos.d/CentOS-Base.repo &&
     libatomic \
     ninja-build \
     centos-release-scl && \
-    yum clean all && rm -rf /var/cache/yum
+    yum clean all && rm -rf /var/cache/yum && \
+    if ! [ -x "$(command -v ninja)" ]; then ln -s $(which ninja-build) /usr/bin/ninja; fi
 
 WORKDIR /root