diff --git a/proxy-mysql/centos/Dockerfile b/proxy-mysql/centos/Dockerfile
index 0405e369e..3e6fd929b 100644
--- a/proxy-mysql/centos/Dockerfile
+++ b/proxy-mysql/centos/Dockerfile
@@ -36,7 +36,7 @@ RUN set -eux && \
             libcurl-minimal \
             libevent \
             libssh \
-            fping
+            fping \
             libxml2 \
             mariadb \
             net-snmp-libs \