Index: src/core/qgssnapper.cpp
===================================================================
--- src/core/qgssnapper.cpp	(revision 15749)
+++ src/core/qgssnapper.cpp	(working copy)
@@ -52,8 +52,13 @@
   QgsSnappingResult newResult;
 
   QList<QgsSnapper::SnapLayer>::iterator snapLayerIt;
+  QStringList renderLayers = mMapRenderer->layerSet();
   for ( snapLayerIt = mSnapLayers.begin(); snapLayerIt != mSnapLayers.end(); ++snapLayerIt )
   {
+    if ( !renderLayers.contains( snapLayerIt->mLayer->id() ) )
+    {
+      continue;
+    }
     //transform point from map coordinates to layer coordinates
     layerCoordPoint = mMapRenderer->mapToLayerCoordinates( snapLayerIt->mLayer, mapCoordPoint );