diff --git a/gnes/preprocessor/image/sliding_window.py b/gnes/preprocessor/image/sliding_window.py
index 40635531..63cadeaf 100644
--- a/gnes/preprocessor/image/sliding_window.py
+++ b/gnes/preprocessor/image/sliding_window.py
@@ -98,7 +98,7 @@ def _get_slid_offset_nd(self, all_subareas: List[List[int]], index: List[List[in
     @staticmethod
     def _get_location(all_subareas: List[List[int]], center_point: List[float]) -> List[bool]:
         location_list = []
-        x_boundary = max([x[1] for x in all_subareas])
+        x_boundary = max([x[2] for x in all_subareas])
         y_boundary = max([y[3] for y in all_subareas])
         for area in all_subareas:
             if center_point[0] in range(int(area[0]), int(area[2])) and center_point[1] in range(int(area[1]),
@@ -110,6 +110,8 @@ def _get_location(all_subareas: List[List[int]], center_point: List[float]) -> L
                 location_list.append(True)
             else:
                 location_list.append(False)
+        if True not in location_list:
+            location_list[-1] = True
         return location_list