diff --git a/lib/ruby_lsp/executor.rb b/lib/ruby_lsp/executor.rb
index fa7bb6e54..dee16664f 100644
--- a/lib/ruby_lsp/executor.rb
+++ b/lib/ruby_lsp/executor.rb
@@ -121,24 +121,10 @@ def run(request)
         begin
           formatting(uri)
         rescue Requests::Formatting::InvalidFormatter => error
-          @message_queue << Notification.new(
-            message: "window/showMessage",
-            params: Interface::ShowMessageParams.new(
-              type: Constant::MessageType::ERROR,
-              message: "Configuration error: #{error.message}",
-            ),
-          )
-
+          @message_queue << Notification.window_show_error("Configuration error: #{error.message}")
           nil
         rescue StandardError, LoadError => error
-          @message_queue << Notification.new(
-            message: "window/showMessage",
-            params: Interface::ShowMessageParams.new(
-              type: Constant::MessageType::ERROR,
-              message: "Formatting error: #{error.message}",
-            ),
-          )
-
+          @message_queue << Notification.window_show_error("Formatting error: #{error.message}")
           nil
         end
       when "textDocument/documentHighlight"
@@ -174,14 +160,7 @@ def run(request)
         begin
           diagnostic(uri)
         rescue StandardError, LoadError => error
-          @message_queue << Notification.new(
-            message: "window/showMessage",
-            params: Interface::ShowMessageParams.new(
-              type: Constant::MessageType::ERROR,
-              message: "Error running diagnostics: #{error.message}",
-            ),
-          )
-
+          @message_queue << Notification.window_show_error("Error running diagnostics: #{error.message}")
           nil
         end
       when "textDocument/completion"
@@ -287,13 +266,7 @@ def perform_initial_indexing
             false
           end
         rescue StandardError => error
-          @message_queue << Notification.new(
-            message: "window/showMessage",
-            params: Interface::ShowMessageParams.new(
-              type: Constant::MessageType::ERROR,
-              message: "Error while indexing: #{error.message}",
-            ),
-          )
+          @message_queue << Notification.window_show_error("Error while indexing: #{error.message}")
         end
 
         # Always end the progress notification even if indexing failed or else it never goes away and the user has no
@@ -402,21 +375,11 @@ def code_action_resolve(params)
 
       case result
       when Requests::CodeActionResolve::Error::EmptySelection
-        @message_queue << Notification.new(
-          message: "window/showMessage",
-          params: Interface::ShowMessageParams.new(
-            type: Constant::MessageType::ERROR,
-            message: "Invalid selection for Extract Variable refactor",
-          ),
-        )
+        @message_queue << Notification.window_show_error("Invalid selection for Extract Variable refactor")
         raise Requests::CodeActionResolve::CodeActionError
       when Requests::CodeActionResolve::Error::InvalidTargetRange
-        @message_queue << Notification.new(
-          message: "window/showMessage",
-          params: Interface::ShowMessageParams.new(
-            type: Constant::MessageType::ERROR,
-            message: "Couldn't find an appropriate location to place extracted refactor",
-          ),
+        @message_queue << Notification.window_show_error(
+          "Couldn't find an appropriate location to place extracted refactor",
         )
         raise Requests::CodeActionResolve::CodeActionError
       else
@@ -639,12 +602,8 @@ def check_formatter_is_available
       unless defined?(RubyLsp::Requests::Support::RuboCopRunner)
         @store.formatter = "none"
 
-        @message_queue << Notification.new(
-          message: "window/showMessage",
-          params: Interface::ShowMessageParams.new(
-            type: Constant::MessageType::ERROR,
-            message: "Ruby LSP formatter is set to `rubocop` but RuboCop was not found in the Gemfile or gemspec.",
-          ),
+        @message_queue << Notification.window_show_error(
+          "Ruby LSP formatter is set to `rubocop` but RuboCop was not found in the Gemfile or gemspec.",
         )
       end
     end
diff --git a/lib/ruby_lsp/utils.rb b/lib/ruby_lsp/utils.rb
index 6dd942e96..1d920384b 100644
--- a/lib/ruby_lsp/utils.rb
+++ b/lib/ruby_lsp/utils.rb
@@ -41,7 +41,22 @@ def initialize(message:, params:)
     end
   end
 
-  class Notification < Message; end
+  class Notification < Message
+    class << self
+      extend T::Sig
+      sig { params(message: String).returns(Notification) }
+      def window_show_error(message)
+        new(
+          message: "window/showMessage",
+          params: Interface::ShowMessageParams.new(
+            type: Constant::MessageType::ERROR,
+            message: message,
+          ),
+        )
+      end
+    end
+  end
+
   class Request < Message; end
 
   # The final result of running a request before its IO is finalized