diff --git a/base/omgsim:4.10.01 b/base/omgsim:4.10.01
index a0d2ef3f1f50147d73d2c0d9c49020f77f0f5ebe..5d3ea318f837cce9f6b9cb9e396d3f170f7510bc 100644
--- a/base/omgsim:4.10.01
+++ b/base/omgsim:4.10.01
@@ -1,3 +1,4 @@
+# Machine to install OMGsim with Geant4.10.01.p03
 FROM docker.km3net.de/base/centos-full:7
  MAINTAINER Vladimir Kulikovskiy <vkulikovskiy@km3net.de>