diff --git a/src/frontend/hud.cpp b/src/frontend/hud.cpp
index 54194dc5..2ff4d53c 100644
--- a/src/frontend/hud.cpp
+++ b/src/frontend/hud.cpp
@@ -286,27 +286,28 @@ void Hud::updateWorldGenDebugVisualization() {
         for (int x = 0; x < width; x++) {
             int cx = x + ox;
             int cz = z + oz;
+            int flippedZ = height - z - 1;
 
             int ax = x - (width - areaWidth) / 2;
             int az = z - (height - areaHeight) / 2;
 
-            data[(z * width + x) * 4 + 1] = 
+            data[(flippedZ * width + x) * 4 + 1] = 
                 level->chunks->getChunk(ax + ox, az + oz) ? 255 : 0;
-            data[(z * width + x) * 4 + 0] = 
+            data[(flippedZ * width + x) * 4 + 0] = 
                 level->chunksStorage->get(ax + ox, az + oz) ? 255 : 0;
 
             if (ax < 0 || az < 0 || 
                 ax >= areaWidth || az >= areaHeight) {
-                data[(z * width + x) * 4 + 2] = 0;
-                data[(z * width + x) * 4 + 3] = 0;
-                data[(z * width + x) * 4 + 3] = 100;
+                data[(flippedZ * width + x) * 4 + 2] = 0;
+                data[(flippedZ * width + x) * 4 + 3] = 0;
+                data[(flippedZ * width + x) * 4 + 3] = 100;
                 continue;
             }
             auto value = debugInfo.areaLevels[az * areaWidth + ax] * 25;
 
             // Chunk is already generated
-            data[(z * width + x) * 4 + 2] = value;
-            data[(z * width + x) * 4 + 3] = 150;
+            data[(flippedZ * width + x) * 4 + 2] = value;
+            data[(flippedZ * width + x) * 4 + 3] = 150;
         }
     }
     auto texture = assets->get<Texture>(DEBUG_WORLDGEN_IMAGE);