diff --git a/app/views/notices/_backtrace.html.haml b/app/views/notices/_backtrace.html.haml
index 953f6b5..3b2422f 100644
--- a/app/views/notices/_backtrace.html.haml
+++ b/app/views/notices/_backtrace.html.haml
@@ -8,7 +8,8 @@
       %td
         %ul.lines
           - lines.each do |line|
-            %li{:class => (line['file'].gsub!('[PROJECT_ROOT]','') ? 'in-project' : nil)}
+            - in_project = line['file'].gsub!('[PROJECT_ROOT]','') && !line['file'].match(/^\/vendor\//)
+            %li{:class => (in_project ? 'in-project' : nil)}
               = line['file']
               →
               %strong= line['method']
\ No newline at end of file
--
libgit2 0.21.2