diff --git a/ci/Dockerfile.in b/ci/Dockerfile.in
index 9a6108a218f8d1dbadde232a0bc1597abe77828f..e6c775f25d03d8147d01dab2b00530539cbd67e0 100644
--- a/ci/Dockerfile.in
+++ b/ci/Dockerfile.in
@@ -16,7 +16,7 @@ apt-get -y install \
     libglib2.0-0 \
     libmount1 \
     libpcre3 \
-    libselinux1
+    libselinux1 \
     libxau6 \
     zlib1g:amd64 \
     zlib1g:i386 \