diff --git a/moto/apigateway/models.py b/moto/apigateway/models.py
index 5ce95742e..b6a14b163 100644
--- a/moto/apigateway/models.py
+++ b/moto/apigateway/models.py
@@ -500,12 +500,12 @@ class RestAPI(BaseModel):
         return child
 
     def add_model(self,
-                    name,
-                    description=None,
-                    schema=None,
-                    content_type=None,
-                    cli_input_json=None,
-                    generate_cli_skeleton=None):
+                  name,
+                  description=None,
+                  schema=None,
+                  content_type=None,
+                  cli_input_json=None,
+                  generate_cli_skeleton=None):
         model_id = create_id()
         new_model = Model(
             id=model_id,
@@ -519,7 +519,6 @@ class RestAPI(BaseModel):
         self.models[name] = new_model
         return new_model
 
-
     def get_resource_for_path(self, path_after_stage_name):
         for resource in self.resources.values():
             if resource.get_path() == path_after_stage_name:
@@ -688,7 +687,6 @@ class Model(BaseModel,dict):
             self["generateCliSkeleton"] = kwargs.get("generate_cli_skeleton")
 
 
-
 class APIGatewayBackend(BaseBackend):
     def __init__(self, region_name):
         super(APIGatewayBackend, self).__init__()
@@ -1171,7 +1169,8 @@ class APIGatewayBackend(BaseBackend):
         model = api.models.get(model_name)
         if model is None:
             raise ModelNotFound
-        return model
+        else:
+            return model
 
 
 apigateway_backends = {}
diff --git a/moto/apigateway/responses.py b/moto/apigateway/responses.py
index c18b7f6c4..02ff536f3 100644
--- a/moto/apigateway/responses.py
+++ b/moto/apigateway/responses.py
@@ -639,7 +639,7 @@ class APIGatewayResponse(BaseResponse):
                 '{{"message":"{0}","code":"{1}"}}'.format(
                     error.message, error.error_type
                 ),
-                )
+            )
 
     def model_induvidual(self, request, full_url, headers):
         self.setup_class(request, full_url, headers)
@@ -662,4 +662,4 @@ class APIGatewayResponse(BaseResponse):
                 '{{"message":"{0}","code":"{1}"}}'.format(
                     error.message, error.error_type
                 ),
-            )
\ No newline at end of file
+            )
diff --git a/moto/apigateway/urls.py b/moto/apigateway/urls.py
index 751d8ae65..cb48e225f 100644
--- a/moto/apigateway/urls.py
+++ b/moto/apigateway/urls.py
@@ -22,7 +22,7 @@ url_paths = {
     "{0}/apikeys/(?P<apikey>[^/]+)": APIGatewayResponse().apikey_individual,
     "{0}/usageplans$": APIGatewayResponse().usage_plans,
     "{0}/domainnames$": APIGatewayResponse().domain_names,
-    "{0}/restapis/(?P<function_id>[^/]+)/models": APIGatewayResponse().models,
+    "{0}/restapis/(?P<function_id>[^/]+)/models$": APIGatewayResponse().models,
     "{0}/restapis/(?P<function_id>[^/]+)/models/(?P<model_name>[^/]+)/?$": APIGatewayResponse().model_induvidual,
     "{0}/domainnames/(?P<domain_name>[^/]+)/?$": APIGatewayResponse().domain_name_induvidual,
     "{0}/usageplans/(?P<usage_plan_id>[^/]+)/?$": APIGatewayResponse().usage_plan_individual,