diff --git a/src/ol/source/bingmapssource.js b/src/ol/source/bingmapssource.js
index 1684940a15..36cbc04294 100644
--- a/src/ol/source/bingmapssource.js
+++ b/src/ol/source/bingmapssource.js
@@ -64,7 +64,7 @@ ol.source.BingMaps.prototype.handleImageryMetadataResponse =
   goog.asserts.assert(response.statusDescription == 'OK');
 
   var brandLogoUri = response.brandLogoUri;
-  var copyright = response.copyright;
+  //var copyright = response.copyright;  // FIXME do we need to display this?
   goog.asserts.assert(response.resourceSets.length == 1);
   var resourceSet = response.resourceSets[0];
   goog.asserts.assert(resourceSet.resources.length == 1);
diff --git a/src/ol/source/tilejsonsource.js b/src/ol/source/tilejsonsource.js
index 8e06720741..b31c833ba5 100644
--- a/src/ol/source/tilejsonsource.js
+++ b/src/ol/source/tilejsonsource.js
@@ -84,7 +84,6 @@ ol.source.TileJSON.prototype.handleTileJSONResponse = function() {
     this.setExtent(extent);
   }
 
-  var scheme = goog.isDef(tileJSON.scheme) || 'xyz';
   if (goog.isDef(tileJSON.scheme)) {
     goog.asserts.assert(tileJSON.scheme == 'xyz');
   }