diff --git a/lib/gitlab/ci/pipeline_duration.rb b/lib/gitlab/ci/pipeline_duration.rb
index e4c0be3b640..b9d0006182e 100644
--- a/lib/gitlab/ci/pipeline_duration.rb
+++ b/lib/gitlab/ci/pipeline_duration.rb
@@ -82,6 +82,8 @@ module Gitlab
       end
 
       def process_pending_duration(segments, duration)
+        return 0 if segments.empty?
+
         total = segments.last.last - segments.first.first
         total - duration
       end