diff --git a/cronosagent.sh b/cronosagent.sh
index 37bb4d5..54f2110 100755
--- a/cronosagent.sh
+++ b/cronosagent.sh
@@ -1,5 +1,11 @@
 #!/bin/sh
 
+if [ -e /bin/pidof -a -n "$(pidof cronosagent)" ]
+then
+  # Should we do something?
+  exit
+fi
+
 DIRECTORY=$(dirname $0)
 
 if [ -f $DIRECTORY/cronosagent.conf ]