diff --git a/ScaledScrollBar.py b/ScaledScrollBar.py
index d747874..26d854d 100644
--- a/ScaledScrollBar.py
+++ b/ScaledScrollBar.py
@@ -26,19 +26,19 @@ class ScaledScrollBar(QScrollBar):
     def setValue(self, value: int) -> None:
         if self.is_huge:
             real_position = value / self.real_maximum
-            super().setValue(self.maximum() * real_position)
+            super().setValue(round(self.maximum() * real_position))
         else:
             super().setValue(value)
 
     def setMaximum(self, maximum: int) -> None:
         if maximum > 2 ** 31:
             new_maximum = 1000 * math.log2(maximum)
-            super().setMaximum(new_maximum)
+            super().setMaximum(math.ceil(new_maximum))
             self.real_maximum = maximum
 
             if not self.is_huge:
                 old_position = self.value() / self.maximum()
-                self.setValue(new_maximum * old_position)
+                self.setValue(round(new_maximum * old_position))
 
             self.is_huge = True
         else: