1 files changed, 2 insertions, 0 deletions
diff --git a/mdkupdate b/mdkupdate
index c0b04595..fbc07090 100755
--- a/mdkupdate
+++ b/mdkupdate
@@ -27,6 +27,8 @@ use mdkonline;
 
 BEGIN { unshift @::textdomains, 'mdkupdate' }
 
+mdkonline::is_running('mdkupdate') and die "mdkupdate already running\n";
+
 require_root_capability();
 
 my $confdir = '/root/.MdkOnline';