diff --git a/Dockerfile b/Dockerfile
index a7d8271..052b275 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -149,7 +149,7 @@ RUN DEBIAN_FRONTEND="noninteractive" apt-get update && \
 	wget \
     winbind \
     xvfb \
-    zenity
+    zenity \
     && apt-get autoremove -y --purge \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*