diff --git a/centos/7/Dockerfile b/centos/7/Dockerfile
index e8155dc..1088535 100644
--- a/centos/7/Dockerfile
+++ b/centos/7/Dockerfile
@@ -35,6 +35,7 @@ RUN \
 ADD my-master-legacy.cnf /etc/my.cnf
 
 COPY docker-entrypoint.sh /usr/local/bin/
-ENTRYPOINT ["docker-entrypoint.sh"]
+RUN /bin/chmod 755 /usr/local/bin/docker-entrypoint.sh
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
 
 CMD ["mysqld"]