diff --git a/src/preprocess.py b/src/preprocess.py
index 41562ed..91d71ef 100644
--- a/src/preprocess.py
+++ b/src/preprocess.py
@@ -63,7 +63,7 @@ class DbOp(object):
                         'unit': res[2]
                     }
                 logger.debug(f"{variable=}")
-            return application
+            return variable
         except Exception as e:
             logger.error(f"Error getting variable: {e}")
             raise VariableNotFoundException(appId, converterId, deviceId, variableId)