diff --git a/common/lib/dependabot/errors.rb b/common/lib/dependabot/errors.rb
index ae64fe75c4c..bd8ffc360c7 100644
--- a/common/lib/dependabot/errors.rb
+++ b/common/lib/dependabot/errors.rb
@@ -71,15 +71,6 @@ def initialize(source, msg = nil)
     end
   end
 
-  class PullRequestUpdateFailed < DependabotError
-    attr_reader :pull_request_id
-
-    def initialize(pull_request_id, msg = nil)
-      @pull_request_id = pull_request_id
-      super(msg)
-    end
-  end
-
   #####################
   # File level errors #
   #####################
diff --git a/common/lib/dependabot/pull_request_updater/azure.rb b/common/lib/dependabot/pull_request_updater/azure.rb
index cb0f6cfd03a..e6111d1ea9a 100644
--- a/common/lib/dependabot/pull_request_updater/azure.rb
+++ b/common/lib/dependabot/pull_request_updater/azure.rb
@@ -6,6 +6,8 @@
 module Dependabot
   class PullRequestUpdater
     class Azure
+      class PullRequestUpdateFailed < Dependabot::DependabotError; end
+
       OBJECT_ID_FOR_BRANCH_DELETE = "0000000000000000000000000000000000000000"
 
       attr_reader :source, :files, :base_commit, :old_commit, :credentials,
@@ -59,10 +61,7 @@ def update_source_branch
         # 3) Delete temp branch
         update_branch(temp_branch_name, new_commit, OBJECT_ID_FOR_BRANCH_DELETE)
 
-        unless response.fetch("success", false)
-          raise Dependabot::PullRequestUpdateFailed.new(pull_request_number,
-                                                        response.fetch("customMessage", nil))
-        end
+        raise PullRequestUpdateFailed, response.fetch("customMessage", nil) unless response.fetch("success", false)
       end
 
       def pull_request
diff --git a/common/spec/dependabot/pull_request_updater/azure_spec.rb b/common/spec/dependabot/pull_request_updater/azure_spec.rb
index e1d95291852..fe5e62d5fe0 100644
--- a/common/spec/dependabot/pull_request_updater/azure_spec.rb
+++ b/common/spec/dependabot/pull_request_updater/azure_spec.rb
@@ -176,7 +176,7 @@
         stub_request(:post, branch_update_url).
           to_return(status: 200, body: fixture("azure", "update_ref_failed.json"))
 
-        expect { updater.update }.to raise_error(Dependabot::PullRequestUpdateFailed)
+        expect { updater.update }.to raise_error(Dependabot::PullRequestUpdater::Azure::PullRequestUpdateFailed)
       end
     end
   end