diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/matter/MatterPanelScreen.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/matter/MatterPanelScreen.kt
index f5c9b847f..54d007f49 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/matter/MatterPanelScreen.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/matter/MatterPanelScreen.kt
@@ -62,13 +62,16 @@ class MatterPanelScreen(
 
 		val scrollBar = DiscreteScrollBarPanel(this, frame, {
 			if (isPatternView) {
-				scrollPatterns = integerDivisionDown(menu.patterns.size, GRID_WIDTH)
-				scrollPatterns
+				integerDivisionDown(menu.patterns.size, GRID_WIDTH)
 			} else {
-				scrollTasks = integerDivisionDown(menu.tasks.size, GRID_WIDTH)
-				scrollTasks
+				integerDivisionDown(menu.tasks.size, GRID_WIDTH)
 			}
-		}, { _, _, _ -> })
+		}, { _, _, new ->
+			if (isPatternView)
+				scrollPatterns = new
+			else
+				scrollTasks = new
+		})
 
 		scrollBar.dock = Dock.RIGHT