1 files changed, 3 insertions, 1 deletions

diff --git a/bitbake/lib/toaster/toastergui/views.py b/bitbake/lib/toaster/toastergui/views.py
index 889b6c64ca..d29ddd6099 100755
--- a/bitbake/lib/toaster/toastergui/views.py
+++ b/bitbake/lib/toaster/toastergui/views.py
@@ -522,7 +522,9 @@ def builddashboard( request, build_id ):
 
 
 
-def generateCoveredList2( revlist = [] ):
+def generateCoveredList2( revlist = None ):
+    if not revlist:
+        revlist = []
     covered_list =  [ x for x in revlist if x.outcome == Task.OUTCOME_COVERED ]
     while len(covered_list):
         revlist =  [ x for x in revlist if x.outcome != Task.OUTCOME_COVERED ]