diff --git a/src/main/java/ru/dbotthepony/mc/otm/screen/MatterPanelScreen.java b/src/main/java/ru/dbotthepony/mc/otm/screen/MatterPanelScreen.java
index 13395d769..8a7c29af7 100644
--- a/src/main/java/ru/dbotthepony/mc/otm/screen/MatterPanelScreen.java
+++ b/src/main/java/ru/dbotthepony/mc/otm/screen/MatterPanelScreen.java
@@ -15,6 +15,7 @@ import net.minecraft.resources.ResourceLocation;
 import net.minecraft.sounds.SoundEvents;
 import net.minecraft.world.entity.player.Inventory;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.Items;
 import ru.dbotthepony.mc.otm.OverdriveThatMatters;
 import ru.dbotthepony.mc.otm.capability.MatterTask;
 import ru.dbotthepony.mc.otm.capability.PatternState;
@@ -27,6 +28,7 @@ import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 
 import static org.lwjgl.opengl.GL11.GL_ALWAYS;
 import static org.lwjgl.opengl.GL11.GL_LESS;
@@ -48,6 +50,12 @@ public class MatterPanelScreen extends MatteryScreen<MatterPanelMenu> {
 		imageHeight = 187;
 
 		titleLabelY = 5;
+
+		for (int i = 0; i < 100; i++) {
+			menu.patterns.add(new PatternState(UUID.randomUUID(), Items.COOKED_BEEF, 0.4));
+			menu.patterns.add(new PatternState(UUID.randomUUID(), Items.DIAMOND, 0.6));
+			menu.patterns.add(new PatternState(UUID.randomUUID(), Items.COBBLESTONE, 0.1));
+		}
 	}
 
 	public static final int GRID_WIDTH = 8;
@@ -95,10 +103,10 @@ public class MatterPanelScreen extends MatteryScreen<MatterPanelMenu> {
 		scroll_panel.setDocking(Dock.RIGHT);
 		scroll_panel.setupRowMultiplier(() -> {
 			if (tasks_tab.isActive()) {
-				return menu.tasks.size() / 9;
+				return menu.tasks.size() / GRID_WIDTH;
 			}
 
-			return menu.patterns.size() / 9;
+			return menu.patterns.size() / GRID_WIDTH;
 		});
 
 		var grid = new GridPanel(this, frame, 0, 0, GRID_WIDTH * AbstractSlotPanel.REGULAR_DIMENSIONS, 0, GRID_WIDTH, GRID_HEIGHT) {
@@ -118,20 +126,24 @@ public class MatterPanelScreen extends MatteryScreen<MatterPanelMenu> {
 				@Nonnull
 				@Override
 				protected ItemStack getItemStack() {
-					if (slot >= menu.patterns.size()) {
+					var slot1 = slot + scroll_panel.getScroll(menu.patterns.size() / GRID_WIDTH) * GRID_WIDTH;
+
+					if (slot1 >= menu.patterns.size()) {
 						return ItemStack.EMPTY;
 					}
 
-					return menu.patterns.get(slot).stack();
+					return menu.patterns.get(slot1).stack();
 				}
 
 				@Override
 				protected List<Component> getItemStackTooltip(ItemStack stack) {
-					if (slot >= menu.patterns.size()) {
+					var slot1 = slot + scroll_panel.getScroll(menu.patterns.size() / GRID_WIDTH) * GRID_WIDTH;
+
+					if (slot1 >= menu.patterns.size()) {
 						return List.of();
 					}
 
-					return getPatternTooltip(super.getItemStackTooltip(stack), menu.patterns.get(slot));
+					return getPatternTooltip(super.getItemStackTooltip(stack), menu.patterns.get(slot1));
 				}
 
 				@Override
@@ -155,22 +167,25 @@ public class MatterPanelScreen extends MatteryScreen<MatterPanelMenu> {
 				@Nonnull
 				@Override
 				protected ItemStack getItemStack() {
-					if (slot >= menu.tasks.size()) {
+					var slot1 = slot + scroll_panel.getScroll(menu.tasks.size() / GRID_WIDTH) * GRID_WIDTH;
+
+					if (slot1 >= menu.tasks.size()) {
 						return ItemStack.EMPTY;
 					}
 
-					var task = menu.tasks.get(slot);
-
+					var task = menu.tasks.get(slot1);
 					return task.stack(Math.max(task.required(), 1));
 				}
 
 				@Override
 				protected List<Component> getItemStackTooltip(ItemStack stack) {
-					if (slot >= menu.tasks.size()) {
+					var slot1 = slot + scroll_panel.getScroll(menu.tasks.size() / GRID_WIDTH) * GRID_WIDTH;
+
+					if (slot1 >= menu.tasks.size()) {
 						return List.of();
 					}
 
-					return getTaskTooltip(super.getItemStackTooltip(stack), menu.tasks.get(slot));
+					return getTaskTooltip(super.getItemStackTooltip(stack), menu.tasks.get(slot1));
 				}
 
 				@Override
diff --git a/src/main/java/ru/dbotthepony/mc/otm/screen/panels/ScrollBarPanel.java b/src/main/java/ru/dbotthepony/mc/otm/screen/panels/ScrollBarPanel.java
index 11ae4e6b8..0da88bcee 100644
--- a/src/main/java/ru/dbotthepony/mc/otm/screen/panels/ScrollBarPanel.java
+++ b/src/main/java/ru/dbotthepony/mc/otm/screen/panels/ScrollBarPanel.java
@@ -152,13 +152,14 @@ public class ScrollBarPanel extends EditablePanel {
 			return 0;
 		}
 
-		return (int) Math.floor(getScroll() * (max_rows - 1) + 0.5);
+		return (int) Math.floor(getScroll() * max_rows + 0.5);
 	}
 
 	// public is for emulating input from outside
 	@Override
 	public boolean mouseScrolledInner(double mouse_x, double mouse_y, double scroll) {
-		setScrollInternal((float) (this.scroll + scroll * scroll_multiplier.get()));
+		setScrollInternal((float) (this.scroll - scroll * scroll_multiplier.get()));
+		updateScrollBarPosition();
 		return true;
 	}