diff --git a/tilecloud_chain/internal_mapcache.py b/tilecloud_chain/internal_mapcache.py
index 001a114a2..30a52ccb7 100644
--- a/tilecloud_chain/internal_mapcache.py
+++ b/tilecloud_chain/internal_mapcache.py
@@ -184,11 +184,12 @@ def compute_tile(self, tile: Tile) -> bool:
             if tile_.error:
                 _LOG.error("Tile %s %s in error: %s", tile_.tilecoord, tile_.formated_metadata, tile_.error)
                 success = False
-            if tile_.data is None:
+            elif tile_.data is None:
                 _LOG.error("Tile %s %s in error: no data", tile_.tilecoord, tile_.formated_metadata)
                 success = False
-            _LOG.debug("Tile %s %s generated", tile_.tilecoord, tile_.formated_metadata)
-            self._cache_store.put_one(tile_)
+            else:
+                _LOG.debug("Tile %s %s generated", tile_.tilecoord, tile_.formated_metadata)
+                self._cache_store.put_one(tile_)
         return success
 
     @contextlib.contextmanager
diff --git a/tilecloud_chain/multitilestore.py b/tilecloud_chain/multitilestore.py
index 95988806e..1f6cc1fb1 100644
--- a/tilecloud_chain/multitilestore.py
+++ b/tilecloud_chain/multitilestore.py
@@ -116,12 +116,13 @@ def apply(key: tuple[str, str], tiles: Iterator[Tile]) -> Iterator[Tile]:
 
     def __str__(self) -> str:
         """Return a string representation of the object."""
-        stores = {store.__class__.__name__ for store in self.stores.values() if store is not None}
+        stores = {str(store) for store in self.stores.values() if store is not None}
         return f"{self.__class__.__name__}({', '.join(stores)})"
 
     def __repr__(self) -> str:
         """Return a string representation of the object."""
-        return str(self)
+        stores = {repr(store) for store in self.stores.values() if store is not None}
+        return f"{self.__class__.__name__}({', '.join(stores)})"
 
     @staticmethod
     def _get_layer(tile: Tile | None) -> tuple[str, str]:
diff --git a/tilecloud_chain/timedtilestore.py b/tilecloud_chain/timedtilestore.py
index e2acb90d5..699c93578 100644
--- a/tilecloud_chain/timedtilestore.py
+++ b/tilecloud_chain/timedtilestore.py
@@ -121,4 +121,8 @@ def get_cheap_bounding_pyramid(self) -> BoundingPyramid | None:
 
     def __str__(self) -> str:
         """Get string representation."""
-        return f"tilecloud_chain.timedtilestore.TimedTileStoreWrapper: {self._tile_store}"
+        return f"{self.__class__.__name__}({self._tile_store}"
+
+    def __repr__(self) -> str:
+        """Get string representation."""
+        return f"{self.__class__.__name__}({self._tile_store!r})"