diff --git a/docs/src/progress/renderertodo.md b/docs/src/progress/renderertodo.md
index c5ee4dea..3f8eea1d 100644
--- a/docs/src/progress/renderertodo.md
+++ b/docs/src/progress/renderertodo.md
@@ -1355,6 +1355,7 @@ Fix TextureInstancedActor packing data texture incorrectly (column major instead
 Grass height variance with control from ui + file
 Fix block mesh ray casting bug due to trimesh overlap
 Fix block mesh samplers incorrectly buffering
+Fix block mesh gen algorithm merging quads incorrectly
 
 
 
diff --git a/src/main/java/electrosphere/net/client/protocol/TerrainProtocol.java b/src/main/java/electrosphere/net/client/protocol/TerrainProtocol.java
index c0298cc7..4671c389 100644
--- a/src/main/java/electrosphere/net/client/protocol/TerrainProtocol.java
+++ b/src/main/java/electrosphere/net/client/protocol/TerrainProtocol.java
@@ -208,7 +208,6 @@ public class TerrainProtocol implements ClientProtocolTemplate<TerrainMessage> {
                 if(Globals.clientBlockManager.containsChunkDataAtWorldPoint(worldPos.x, worldPos.y, worldPos.z, ChunkData.NO_STRIDE)){
                     BlockChunkData data = Globals.clientBlockManager.getChunkDataAtWorldPoint(worldPos.x, worldPos.y, worldPos.z, ChunkData.NO_STRIDE);
                     if(data != null){
-                        System.out.println("Set " + message.getvoxelX() + " " + message.getvoxelY() + " " + message.getvoxelZ() + "   to   " + message.getblockType());
                         data.setType(
                             message.getvoxelX(),
                             message.getvoxelY(),
diff --git a/src/main/java/electrosphere/renderer/meshgen/BlockMeshgen.java b/src/main/java/electrosphere/renderer/meshgen/BlockMeshgen.java
index 2fade580..872e2341 100644
--- a/src/main/java/electrosphere/renderer/meshgen/BlockMeshgen.java
+++ b/src/main/java/electrosphere/renderer/meshgen/BlockMeshgen.java
@@ -82,7 +82,7 @@ public class BlockMeshgen {
                             currentQuad.h = y - currentQuad.y;
                             //check if should merge with previous quad
                             for(QuadMesh prevMesh : quadMeshes){
-                                if(prevMesh.x + prevMesh.w == currentQuad.x && prevMesh.y == currentQuad.y && prevMesh.h == currentQuad.h){
+                                if(prevMesh.x + prevMesh.w == currentQuad.x && prevMesh.y == currentQuad.y && prevMesh.h == currentQuad.h && prevMesh.z == currentQuad.z){
                                     prevMesh.w = prevMesh.w + 1;
                                     currentQuad = null;
                                     break;
diff --git a/src/test/java/electrosphere/renderer/meshgen/BlockMeshgenTests.java b/src/test/java/electrosphere/renderer/meshgen/BlockMeshgenTests.java
index 9490332e..56b263d5 100644
--- a/src/test/java/electrosphere/renderer/meshgen/BlockMeshgenTests.java
+++ b/src/test/java/electrosphere/renderer/meshgen/BlockMeshgenTests.java
@@ -193,6 +193,47 @@ public class BlockMeshgenTests {
         assertEquals(0, quadMeshes.size());
     }
 
+    @UnitTest
+    public void test_fillQuadMeshes_6(){
+        //expected data
+        QuadMesh[] expectedData = new QuadMesh[]{
+            new QuadMesh(5,0,8,1,1,1),
+            new QuadMesh(8,0,8,1,1,1),
+            new QuadMesh(7,0,4,1,1,1),
+        };
+
+        //setup data
+        BlockChunkData chunkData = new BlockChunkData();
+        short[] types = new short[BlockChunkData.CHUNK_DATA_WIDTH * BlockChunkData.CHUNK_DATA_WIDTH * BlockChunkData.CHUNK_DATA_WIDTH];
+        chunkData.setType(types);
+        chunkData.setType(5, 0, 8, (short)1);
+        chunkData.setType(8, 0, 8, (short)1);
+        chunkData.setType(7, 0, 4, (short)1);
+        List<QuadMesh> quadMeshes = new LinkedList<QuadMesh>();
+
+        //call
+        BlockMeshgen.fillQuadMeshes(quadMeshes, chunkData);
+
+
+        //error check result
+        assertEquals(expectedData.length, quadMeshes.size());
+
+        for(QuadMesh expected : expectedData){
+            boolean found = false;
+            for(QuadMesh actual : quadMeshes){
+                if(expected.x == actual.x && expected.y == actual.y && expected.w == actual.w && expected.h == actual.h){
+                    found = true;
+                    assertEquals(expected.x, actual.x);
+                    assertEquals(expected.y, actual.y);
+                    assertEquals(expected.w, actual.w);
+                    assertEquals(expected.h, actual.h);
+                    break;
+                }
+            }
+            assertEquals(true, found);
+        }
+    }
+
     @UnitTest
     public void test_meshifyBox_verts(){
         //expected data