diff --git a/modules/openapi-generator/src/main/resources/haskell-servant/README.mustache b/modules/openapi-generator/src/main/resources/haskell-servant/README.mustache
index 359ba55c0f9..9836b246536 100644
--- a/modules/openapi-generator/src/main/resources/haskell-servant/README.mustache
+++ b/modules/openapi-generator/src/main/resources/haskell-servant/README.mustache
@@ -50,7 +50,7 @@ main = do
   manager <- newManager tlsManagerSettings
 
   -- Create the client (all endpoint functions will be available)
-  {{title}}Backend{..} <- API.create{{title}}Client
+  let {{title}}Backend{..} = API.create{{title}}Client
 
   -- Any {{title}} API call can go here, e.g. here we call `getSomeEndpoint`
   API.call{{title}} (mkClientEnv manager url) getSomeEndpoint
diff --git a/samples/server/petstore/haskell-servant/README.md b/samples/server/petstore/haskell-servant/README.md
index 0b315e40a84..68f36b46eac 100644
--- a/samples/server/petstore/haskell-servant/README.md
+++ b/samples/server/petstore/haskell-servant/README.md
@@ -50,7 +50,7 @@ main = do
   manager <- newManager tlsManagerSettings
 
   -- Create the client (all endpoint functions will be available)
-  OpenAPIPetstoreBackend{..} <- API.createOpenAPIPetstoreClient
+  let OpenAPIPetstoreBackend{..} = API.createOpenAPIPetstoreClient
 
   -- Any OpenAPIPetstore API call can go here, e.g. here we call `getSomeEndpoint`
   API.callOpenAPIPetstore (mkClientEnv manager url) getSomeEndpoint