diff --git a/util/pbs/pbs.py b/util/pbs/pbs.py
index 292ddf1f9..70a0c6bed 100755
--- a/util/pbs/pbs.py
+++ b/util/pbs/pbs.py
@@ -158,7 +158,7 @@ class qsub:
             self.cmd.append('-q' + self.queue)
 
         if self.afterok:
-            self.cmd.append('-Wdepend=afterok:%s' % self.after)
+            self.cmd.append('-Wdepend=afterok:%s' % self.afterok)
 
         self.cmd.extend(args)
         self.script = script