diff --git a/job.cpp b/job.cpp
index 2a94dd7..eaecbc4 100644
--- a/job.cpp
+++ b/job.cpp
@@ -420,7 +420,12 @@ void *JobThread::Entry()
 	if (runnable)
 	{
 		job->Execute();
-		delete job;
+	}
+
+	if (job != NULL)
+	{
+	    delete job;
+	    job = NULL;
 	}
 
 	return(NULL);