diff --git a/openapi/haskell-http-client.xml b/openapi/haskell-http-client.xml
index a889190..0656910 100644
--- a/openapi/haskell-http-client.xml
+++ b/openapi/haskell-http-client.xml
@@ -23,6 +23,7 @@
                             <configOptions>
                                 <packageName>${generator.package.name}</packageName>
                                 <packageVersion>${generator.client.version}</packageVersion>
+                                <allowNonUniqueOperationIds>true</allowNonUniqueOperationIds>
                             </configOptions>
                         </configuration>
                     </execution>