diff --git a/index.js b/index.js
index dffbf5b..acf57a0 100644
--- a/index.js
+++ b/index.js
@@ -166,13 +166,13 @@ function mountSwagger(loopbackApplication, swaggerApp, opts) {
               }
               let nonElasticOperationIds = ['.prototype.__get__model', '.prototype.__get__user', '.prototype.__get__tenant'];
               let nonElasticOperationId = nonElasticOperationIds.filter(opId => _.includes(result[newKey].get.operationId, opId))[0];
-              if (!nonElasticOperationId && !_.endsWith(newKey, '/change-stream') && _.isArray(result[newKey].get.parameters) && _.findIndex(result[newKey].get.parameters, { name: 'getFrom', enum: ['elastic'] }) === -1) {
+              if (!nonElasticOperationId && !_.endsWith(newKey, '/change-stream') && _.isArray(result[newKey].get.parameters) && _.findIndex(result[newKey].get.parameters, { name: 'getFrom', enum: ['mongo', 'elastic'] }) === -1) {
                 result[newKey].get.parameters.push({
                   name: 'getFrom',
                   in: 'query',
-                  required: false,
+                  required: true,
                   type: 'string',
-                  enum: ['elastic'],
+                  enum: ['mongo', 'elastic'],
                   description: 'Gets the resource from the indexed elastic store rather than the default'
                 });
               }