diff --git a/dlt/destinations/impl/destination/configuration.py b/dlt/destinations/impl/destination/configuration.py
index 2e4e14f386..cbb9a8b6f2 100644
--- a/dlt/destinations/impl/destination/configuration.py
+++ b/dlt/destinations/impl/destination/configuration.py
@@ -36,7 +36,7 @@ def fingerprint(self) -> str:
         """
         name = (
             self.destination_callable
-            if isinstance(str, self.destination_callable)
+            if isinstance(self.destination_callable, str)
             else self.destination_callable.__name__
         )
         return digest128(name)