diff --git a/src/js/core/utils.js b/src/js/core/utils.js
index 0aa97992..1c0c3d81 100644
--- a/src/js/core/utils.js
+++ b/src/js/core/utils.js
@@ -632,3 +632,54 @@ export function formatItemsPerSecond(speed, double = false, separator = T.global
               round2Digits(speed).toString().replace(".", separator)
           ) + (double ? "  " + T.ingame.buildingPlacement.infoTexts.itemsPerSecondDouble : "");
 }
+
+/**
+ * Rotates a flat 3x3 matrix clockwise
+ * Entries:
+ * 0 lo
+ * 1 mo
+ * 2 ro
+ * 3 lm
+ * 4 mm
+ * 5 rm
+ * 6 lu
+ * 7 mu
+ * 8 ru
+ * @param {Array<number>} flatMatrix
+ */
+
+export function rotateFlatMatrix3x3(flatMatrix) {
+    return [
+        flatMatrix[6],
+        flatMatrix[3],
+        flatMatrix[0],
+        flatMatrix[7],
+        flatMatrix[4],
+        flatMatrix[1],
+        flatMatrix[8],
+        flatMatrix[5],
+        flatMatrix[2],
+    ];
+}
+
+/**
+ * Generates rotated variants of the matrix
+ * @param {Array<number>} originalMatrix
+ * @returns {Object<number, Array<number>>}
+ */
+export function generateMatrixRotations(originalMatrix) {
+    const result = {
+        0: originalMatrix,
+    };
+
+    originalMatrix = rotateFlatMatrix3x3(originalMatrix);
+    result[90] = originalMatrix;
+
+    originalMatrix = rotateFlatMatrix3x3(originalMatrix);
+    result[180] = originalMatrix;
+
+    originalMatrix = rotateFlatMatrix3x3(originalMatrix);
+    result[270] = originalMatrix;
+
+    return result;
+}
diff --git a/src/js/game/buildings/belt_base.js b/src/js/game/buildings/belt_base.js
index 75aa368b..059591ce 100644
--- a/src/js/game/buildings/belt_base.js
+++ b/src/js/game/buildings/belt_base.js
@@ -1,4 +1,4 @@
-import { formatItemsPerSecond } from "../../core/utils";
+import { formatItemsPerSecond, generateMatrixRotations } from "../../core/utils";
 import { enumAngleToDirection, enumDirection, Vector } from "../../core/vector";
 import { SOUNDS } from "../../platform/sound";
 import { T } from "../../translations";
@@ -10,26 +10,9 @@ import { GameRoot } from "../root";
 export const arrayBeltVariantToRotation = [enumDirection.top, enumDirection.left, enumDirection.right];
 
 export const beltOverlayMatrices = {
-    [enumDirection.top]: {
-        0: [0, 1, 0, 0, 1, 0, 0, 1, 0],
-        90: [0, 0, 0, 1, 1, 1, 0, 0, 0],
-        180: [0, 1, 0, 0, 1, 0, 0, 1, 0],
-        270: [0, 0, 0, 1, 1, 1, 0, 0, 0],
-    },
-
-    [enumDirection.left]: {
-        0: [0, 0, 0, 1, 1, 0, 0, 1, 0],
-        90: [0, 1, 0, 1, 1, 0, 0, 0, 0],
-        180: [0, 1, 0, 0, 1, 1, 0, 0, 0],
-        270: [0, 0, 0, 0, 1, 1, 0, 1, 0],
-    },
-
-    [enumDirection.right]: {
-        0: [0, 0, 0, 0, 1, 1, 0, 1, 0],
-        90: [0, 0, 0, 1, 1, 0, 0, 1, 0],
-        180: [0, 1, 0, 1, 1, 0, 0, 0, 0],
-        270: [0, 1, 0, 0, 1, 1, 0, 0, 0],
-    },
+    [enumDirection.top]: generateMatrixRotations([0, 1, 0, 0, 1, 0, 0, 1, 0]),
+    [enumDirection.left]: generateMatrixRotations([0, 0, 0, 1, 1, 0, 0, 1, 0]),
+    [enumDirection.right]: generateMatrixRotations([0, 0, 0, 0, 1, 1, 0, 1, 0]),
 };
 
 export class MetaBeltBaseBuilding extends MetaBuilding {
diff --git a/src/js/game/buildings/underground_belt.js b/src/js/game/buildings/underground_belt.js
index eeb44987..4b647c13 100644
--- a/src/js/game/buildings/underground_belt.js
+++ b/src/js/game/buildings/underground_belt.js
@@ -8,7 +8,7 @@ import { MetaBuilding, defaultBuildingVariant } from "../meta_building";
 import { GameRoot, enumLayer } from "../root";
 import { globalConfig } from "../../core/config";
 import { enumHubGoalRewards } from "../tutorial_goals";
-import { formatItemsPerSecond } from "../../core/utils";
+import { formatItemsPerSecond, generateMatrixRotations } from "../../core/utils";
 import { T } from "../../translations";
 
 /** @enum {string} */
@@ -27,20 +27,10 @@ export const enumUndergroundBeltVariantToTier = {
 
 const overlayMatrices = [
     // Sender
-    {
-        0: [1, 1, 1, 0, 1, 0, 0, 1, 0],
-        90: [0, 0, 1, 1, 1, 1, 0, 0, 1],
-        180: [0, 1, 0, 0, 1, 0, 1, 1, 1],
-        270: [1, 0, 0, 1, 1, 1, 1, 0, 0],
-    },
+    generateMatrixRotations([1, 1, 1, 0, 1, 0, 0, 1, 0]),
 
     // Receiver
-    {
-        0: [0, 1, 0, 0, 1, 0, 1, 1, 1],
-        90: [1, 0, 0, 1, 1, 1, 1, 0, 0],
-        180: [1, 1, 1, 0, 1, 0, 0, 1, 0],
-        270: [0, 0, 1, 1, 1, 1, 0, 0, 1],
-    },
+    generateMatrixRotations([0, 1, 0, 0, 1, 0, 1, 1, 1]),
 ];
 
 export class MetaUndergroundBeltBuilding extends MetaBuilding {