diff --git a/lib/stackops/apiGateway.js b/lib/stackops/apiGateway.js
index 64c7431..6333162 100644
--- a/lib/stackops/apiGateway.js
+++ b/lib/stackops/apiGateway.js
@@ -133,7 +133,7 @@ module.exports = function(currentTemplate, aliasStackTemplates, currentAliasStac
 			const funcIndex = _.findIndex(uriParts, part => _.has(part, 'Fn::GetAtt'));
 
 			// Use the SERVERLESS_ALIAS stage variable to determine the called function alias
-			uriParts.splice(funcIndex + 1, 0, `:${this._alias}`);
+			uriParts.splice(funcIndex + 1, 0, ':${stageVariables.SERVERLESS_ALIAS}');
 
 			authorizer.Properties.Name = `${authorizer.Properties.Name}-${this._alias}`;