diff --git a/base/mono:5 b/base/mono:5
index 8d4c62ed0e8b46e2bd4bf845add9b81d110823d1..6ebaa88f2f7970011350de8b92286a9685a04886 100644
--- a/base/mono:5
+++ b/base/mono:5
@@ -1,4 +1,4 @@
 FROM mono:5
  MAINTAINER Tamas Gal <tgal@km3net.de>
 
- RUN apt-get update -qq && apt-get install -y -qq procps
+ RUN apt-get update -qq && apt-get install -y -qq procps