diff --git a/world.py b/world.py
index 7ae08b0..4de2a7a 100644
--- a/world.py
+++ b/world.py
@@ -220,9 +220,11 @@ class WorldRenderer(object):
         inChunkZ = spawnZ - (chunkY*16)
 
         ## find the first air block
-        while (blockArray[inChunkX, inChunkZ, spawnY] != 0):
+        while (blockArray[inChunkX, inChunkZ, spawnY] != 0 and spawnY != 127):
             spawnY += 1
-
+        
+        if spawnY == 127 and blockArray[inChunkX, inChunkZ, spawnY] != 0 :
+            spawnY = 128 # get the right spawnY coordinate for markers.js
 
         self.POI.append( dict(x=spawnX, y=spawnY, z=spawnZ, 
                 msg="Spawn", type="spawn", chunk=(inChunkX,inChunkZ)))