diff --git a/deploy/python/preprocess.py b/deploy/python/preprocess.py
index 5d7fc9296..1da32ad6e 100644
--- a/deploy/python/preprocess.py
+++ b/deploy/python/preprocess.py
@@ -79,7 +79,7 @@ class UnifiedResize(object):
             if isinstance(interpolation, str):
                 interpolation = _cv2_interp_from_str[interpolation.lower()]
             # compatible with opencv < version 4.4.0
-            elif not interpolation:
+            elif interpolation is None:
                 interpolation = cv2.INTER_LINEAR
             self.resize_func = partial(cv2.resize, interpolation=interpolation)
         elif backend.lower() == "pil":
diff --git a/ppcls/data/preprocess/ops/operators.py b/ppcls/data/preprocess/ops/operators.py
index e46823d2a..e551fb768 100644
--- a/ppcls/data/preprocess/ops/operators.py
+++ b/ppcls/data/preprocess/ops/operators.py
@@ -60,7 +60,7 @@ class UnifiedResize(object):
             if isinstance(interpolation, str):
                 interpolation = _cv2_interp_from_str[interpolation.lower()]
             # compatible with opencv < version 4.4.0
-            elif not interpolation:
+            elif interpolation is None:
                 interpolation = cv2.INTER_LINEAR
             self.resize_func = partial(cv2.resize, interpolation=interpolation)
         elif backend.lower() == "pil":