diff --git a/croppa/main.py b/croppa/main.py
index a842a9f..f3912a6 100644
--- a/croppa/main.py
+++ b/croppa/main.py
@@ -3771,9 +3771,9 @@ class VideoEditor:
                     self.mouse_dragging = False
                 return
 
-        # Handle crop border dragging (only when Shift is NOT pressed)
-        if not (flags & cv2.EVENT_FLAG_SHIFTKEY) and self.crop_rect:
-            border_threshold = 10  # pixels
+        # Handle crop border dragging (only when Shift and Ctrl are NOT pressed)
+        if not (flags & cv2.EVENT_FLAG_SHIFTKEY) and not (flags & cv2.EVENT_FLAG_CTRLKEY) and self.crop_rect:
+            border_threshold = 800  # pixels
             
             # Get effective crop in rotated coords and map to screen
             eff_x, eff_y, eff_w, eff_h = self._get_effective_crop_rect_for_frame(getattr(self, 'current_frame', 0))