diff --git a/Dockerfile.centos7 b/Dockerfile.centos7
index ce60ea7fb1..736a42663c 100644
--- a/Dockerfile.centos7
+++ b/Dockerfile.centos7
@@ -42,7 +42,7 @@ RUN yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.n
 	    ncurses-devel \
         qt5-qtbase-devel \
         xcb-util-wm \
-        xcb-util-renderutil
+        xcb-util-renderutil \
     && yum clean all
 
 # we need to build our own patchelf