diff --git a/viloca/tiling.py b/viloca/tiling.py
index 2665f2b..5a2ab77 100644
--- a/viloca/tiling.py
+++ b/viloca/tiling.py
@@ -103,8 +103,9 @@ def get_window_tilings(self) -> List[Tuple[int, int]]:
                 self.end - 1,
                 self.incr
             ))
-            #while window_positions[-1] + self.window_length >= self.end:
-            #    del window_positions[-1] # FIXME uncommented to create one single window
+            while window_positions[-1] + self.window_length >= self.end:
+                del window_positions[-1] # FIXME uncommented to create one single window
+                window_positions.append(self.end - 1 - self.window_length)
 
         else:
             window_positions = list(range(