diff --git a/enterprise/lib/captain/tools/update_priority_tool.rb b/enterprise/lib/captain/tools/update_priority_tool.rb
index 8fc75f601..1196911fa 100644
--- a/enterprise/lib/captain/tools/update_priority_tool.rb
+++ b/enterprise/lib/captain/tools/update_priority_tool.rb
@@ -23,7 +23,9 @@ class Captain::Tools::UpdatePriorityTool < Captain::Tools::BasePublicTool
   end
 
   def normalize_priority(priority)
-    priority == 'nil' || priority.blank? ? nil : priority
+    return nil if priority == 'nil' || priority.blank?
+
+    priority.downcase
   end
 
   def valid_priority?(priority)