diff --git a/net_api_generator/generator.py b/net_api_generator/generator.py
index 986eb619e969bda8fec65af2fccc7ea181ff4902..a263bee562cc43ff79efc62fe38db84480134d7b 100644
--- a/net_api_generator/generator.py
+++ b/net_api_generator/generator.py
@@ -676,7 +676,7 @@ def openapi(default_endpoint):
                     'content': {
                         'application/json': {
                             'schema': {'$ref': (
-                                f'https://netvs{"-devel" if "devel" in loader.api_host else ""}.scc.kit.edu/netdb_{loader.api_version}_ta.yml') if
+                                f'https://netvs{"-devel" if "devel" in loader.api_host else ""}.scc.kit.edu/netdb_{loader.api_version.replace(".", "_")}_ta.yml') if
                             loader.version_detail['major'] >= 4 else '#/components/schemas/wapi.transaction_stmt'}
                         }
                     }