diff --git a/example/marker-clustering-realworld.50000.html b/example/marker-clustering-realworld.50000.html
index 1a1ecdc67..ff73a8824 100644
--- a/example/marker-clustering-realworld.50000.html
+++ b/example/marker-clustering-realworld.50000.html
@@ -29,23 +29,23 @@
 
 			var map = L.map('map', { center: latlng, zoom: 13, layers: [cloudmade] });
 
-            var progress = document.getElementById('progress');
-            var progressBar = document.getElementById('progress-bar');
+			var progress = document.getElementById('progress');
+			var progressBar = document.getElementById('progress-bar');
 
-            function updateProgressBar(processed, total, elapsed, layersArray) {
-                if (elapsed > 1000) {
-                    // if it takes more than a second to load, display the progress bar:
-                    progress.style.display = 'block';
-                    progressBar.style.width = Math.round(processed/total*100) + '%';
-                }
+			function updateProgressBar(processed, total, elapsed, layersArray) {
+				if (elapsed > 1000) {
+					// if it takes more than a second to load, display the progress bar:
+					progress.style.display = 'block';
+					progressBar.style.width = Math.round(processed/total*100) + '%';
+				}
 
-                if (processed === total) {
-                    // all markers processed - hide the progress bar:
-                    progress.style.display = 'none';
-                }
-            }
+				if (processed === total) {
+					// all markers processed - hide the progress bar:
+					progress.style.display = 'none';
+				}
+			}
 
-            var markers = L.markerClusterGroup({ chunkedLoading: true, chunkProgress: updateProgressBar });
+			var markers = L.markerClusterGroup({ chunkedLoading: true, chunkProgress: updateProgressBar });
 
 			var markerList = [];