1 files changed, 6 insertions, 1 deletions
diff --git a/app/models/external_issue.rb b/app/models/external_issue.rb
index 26712c19b5a..e63f89a9f85 100644
--- a/app/models/external_issue.rb
+++ b/app/models/external_issue.rb
@@ -24,6 +24,11 @@ class ExternalIssue
   def ==(other)
     other.is_a?(self.class) && (to_s == other.to_s)
   end
+  alias_method :eql?, :==
+
+  def hash
+    [self.class, to_s].hash
+  end
 
   def project
     @project
@@ -43,7 +48,7 @@ class ExternalIssue
   end
 
   def reference_link_text(from_project = nil)
-    return "##{id}" if /^\d+$/.match(id)
+    return "##{id}" if id =~ /^\d+$/
 
     id
   end