diff --git a/samples/dnn/edge_detection.py b/samples/dnn/edge_detection.py
index f242aab238..e3eeff2e36 100644
--- a/samples/dnn/edge_detection.py
+++ b/samples/dnn/edge_detection.py
@@ -27,8 +27,8 @@ class CropLayer(object):
         batchSize, numChannels = inputShape[0], inputShape[1]
         height, width = targetShape[2], targetShape[3]
 
-        self.ystart = (inputShape[2] - targetShape[2]) / 2
-        self.xstart = (inputShape[3] - targetShape[3]) / 2
+        self.ystart = (inputShape[2] - targetShape[2]) // 2
+        self.xstart = (inputShape[3] - targetShape[3]) // 2
         self.yend = self.ystart + height
         self.xend = self.xstart + width