diff --git a/lib/handshake.js b/lib/handshake.js
index 1abb9a4..8f9c1c9 100644
--- a/lib/handshake.js
+++ b/lib/handshake.js
@@ -32,38 +32,39 @@ function readVisuals(bl, visuals, n_visuals, cb)
     });
 }
 
-function readDepths(bl, display, depths, n_depths, cb)
-{
-    if (n_depths == 0)
-    {
-        cb();
-        return;
-    }
-
-    bl.unpack( 'CxSxxxx', function(res) {
-        var dep = res[0];
-        var n_visuals = res[1];
-        var visuals = {};
-        readVisuals(bl, visuals, n_visuals, function()
-        {
-            if (dep in depths) {
-                for (var visual in visuals) {
-                    depths[dep][visual] = visuals[visual];
-                }
-                n_depths--;
-            } else {
-                depths[dep] = visuals;
-            }
-            if (Object.keys(depths).length == n_depths)
-                cb();
-            else
-                readDepths(bl, display, depths, n_depths, cb);
-        });
-    });
-}
-
 function readScreens(bl, display, cbDisplayReady)
 {
+     var numParsedDepths = 0;
+     var readDepths = function(bl, display, depths, n_depths, cb)
+     {
+         if (n_depths == 0)
+         {
+             cb();
+             return;
+         }
+
+         bl.unpack( 'CxSxxxx', function(res) {
+             var dep = res[0];
+             var n_visuals = res[1];
+             var visuals = {};
+             readVisuals(bl, visuals, n_visuals, function()
+             {
+                 if (dep in depths) {
+                     for (var visual in visuals) {
+                         depths[dep][visual] = visuals[visual];
+                     }
+                 } else {
+                     depths[dep] = visuals;
+                 }
+                 numParsedDepths++;
+                 if (numParsedDepths == n_depths)
+                     cb();
+                 else
+                     readDepths(bl, display, depths, n_depths, cb);
+             });  
+         });
+     }
+
      // for (i=0; i < display.screen_num; ++i)
      {
          var scr = {};