diff --git a/storage/src/lib.rs b/storage/src/lib.rs
index e7f7f44..3157bc0 100644
--- a/storage/src/lib.rs
+++ b/storage/src/lib.rs
@@ -103,9 +103,8 @@ impl RocksDBIO {
 
             Ok(dbio)
         } else {
-            warn!("Starting db in unset mode, will have to set starting block manually");
-
-            Ok(dbio)
+            // Here we are trying to start a DB without a block, one should not do it.
+            unreachable!()
         }
     }