diff --git a/cozorocks/bridge/iter.h b/cozorocks/bridge/iter.h
index 2c0861a3..dd9c63c6 100644
--- a/cozorocks/bridge/iter.h
+++ b/cozorocks/bridge/iter.h
@@ -103,13 +103,11 @@ struct IterBridge {
     }
 
     inline void seek(RustBytes key) {
-        string k = convert_slice_to_string(key);
-        iter->Seek(Slice(k));
+        iter->Seek(convert_slice(key));
     }
 
     inline void seek_backward(RustBytes key) {
-        string k = convert_slice_to_string(key);
-        iter->SeekForPrev(Slice(k));
+        iter->SeekForPrev(convert_slice(key));
     }
 
     inline bool is_valid() const {