diff --git a/qlib/data/ops.py b/qlib/data/ops.py
index 8c7699fb8..2067991fc 100644
--- a/qlib/data/ops.py
+++ b/qlib/data/ops.py
@@ -18,7 +18,7 @@ try:
     from ._libs.rolling import rolling_slope, rolling_rsquare, rolling_resi
     from ._libs.expanding import expanding_slope, expanding_rsquare, expanding_resi
 except ImportError as err:
-    print("Do not import qlib package in the repository directory!")
+    print("#### Do not import qlib package in the repository directory in case of importing qlib from . without compiling #####")
     raise
 
 __all__ = (