diff --git a/src/dipdup/runtimes.py b/src/dipdup/runtimes.py
index c3a7259e3..fff5879ef 100644
--- a/src/dipdup/runtimes.py
+++ b/src/dipdup/runtimes.py
@@ -163,7 +163,7 @@ def runtime_config(self) -> 'RuntimeConfigurationObject':
 
     def get_spec_version(self, name: str) -> SubstrateSpecVersion:
         if name in self._spec_versions:
-            self._spec_versions[name]
+            return self._spec_versions[name]
 
         _logger.info('loading spec version `%s`', name)