diff --git a/pysollib/tile/selectcardset.py b/pysollib/tile/selectcardset.py
index ea7f4b42..f3ff9610 100644
--- a/pysollib/tile/selectcardset.py
+++ b/pysollib/tile/selectcardset.py
@@ -231,7 +231,7 @@ class SelectCardsetDialogWithPreview(MfxDialog):
         sh = self.top.winfo_screenheight()
 
         h = sh * .8
-        w1, w2 = min(300, sw / 2.5), max(sw / 2 + ((sw / 2.5) - 300), sw / 2)
+        w1, w2 = min(300, sw // 2.5), max(sw / 2 + ((sw // 2.5) - 300), sw / 2)
         paned_window = ttk.PanedWindow(top_frame, orient='horizontal')
         paned_window.pack(expand=True, fill='both')
         left_frame = ttk.Frame(paned_window)
diff --git a/pysollib/tile/selectgame.py b/pysollib/tile/selectgame.py
index 6525b207..6b2e7a34 100644
--- a/pysollib/tile/selectgame.py
+++ b/pysollib/tile/selectgame.py
@@ -356,7 +356,7 @@ class SelectGameDialogWithPreview(SelectGameDialog):
         sh = self.top.winfo_screenheight()
 
         h = sh * .8
-        w1, w2 = min(250, sw / 2.5), max(sw / 2 + ((sw / 2.5) - 250), sw / 2)
+        w1, w2 = min(250, sw // 2.5), max(sw / 2 + ((sw // 2.5) - 250), sw / 2)
 
         # print sw, w1, w2
         # w2 = max(200, min(w2, 10 + 12 * (app.subsampled_images.CARDW + 10)))
diff --git a/pysollib/tile/selecttile.py b/pysollib/tile/selecttile.py
index 6e1baf26..5957f0ac 100644
--- a/pysollib/tile/selecttile.py
+++ b/pysollib/tile/selecttile.py
@@ -132,7 +132,7 @@ class SelectTileDialogWithPreview(MfxDialog):
         sh = self.top.winfo_screenheight()
 
         h = sh * .8
-        w1, w2 = min(250, sw / 2.5), max(sw / 2 + ((sw / 2.5) - 250), sw / 2)
+        w1, w2 = min(250, sw // 2.5), max(sw / 2 + ((sw // 2.5) - 250), sw / 2)
 
         font = app.getFont("default")
         padx, pady = 4, 4