diff --git a/nautilus_trader/backtest/node.py b/nautilus_trader/backtest/node.py
index fcfc08f56869..9f904b8c14d7 100644
--- a/nautilus_trader/backtest/node.py
+++ b/nautilus_trader/backtest/node.py
@@ -302,7 +302,7 @@ def _run_streaming(
             engine.add_data(
                 data=capsule_to_list(chunk),
                 validate=False,  # Cannot validate mixed type stream
-                sort=False,  # Already sorted from kmerge
+                sort=True,  # Temporarily sorting  # Already sorted from kmerge
             )
             engine.run(
                 run_config_id=run_config_id,