diff --git a/test/demo/customheaders.html b/test/demo/customheaders.html
index 737cf863..95063052 100644
--- a/test/demo/customheaders.html
+++ b/test/demo/customheaders.html
@@ -44,7 +44,7 @@
             // in tileByteRanges.
             getTileAjaxHeaders: function(level, x, y) {
                 return {
-                    Range: "bytes " + tileManifest.tileRanges[level][x][y].join("-") + "/" + tileManifest.totalSize
+                    Range: "bytes=" + tileManifest.tileRanges[level][x][y].join("-") + "/" + tileManifest.totalSize
                 };
             },
         };
diff --git a/test/modules/ajax-tiles.js b/test/modules/ajax-tiles.js
index f662c301..12eeb7e6 100644
--- a/test/modules/ajax-tiles.js
+++ b/test/modules/ajax-tiles.js
@@ -27,7 +27,7 @@
         // in tileByteRanges.
         getTileAjaxHeaders: function(level, x, y) {
             return {
-                Range: 'bytes ' + tileManifest.tileRanges[level][x][y].join('-') + '/' + tileManifest.totalSize
+                Range: 'bytes=' + tileManifest.tileRanges[level][x][y].join('-') + '/' + tileManifest.totalSize
             };
         },
     };