diff --git a/html/views/history/history.js b/html/views/history/history.js
index eb99615..36d40f7 100644
--- a/html/views/history/history.js
+++ b/html/views/history/history.js
@@ -178,7 +178,7 @@ var showDiff = function() {
 	}
 
 	var binaryDiff = function(filename) {
-		if (filename.match(/\.(png|jpg|pdf|icns|psd)$/i))
+		if (filename.match(/\.(png|jpg|icns|psd)$/i))
 			return '<a href="#" onclick="return showImage(this, \'' + filename + '\')">Display image</a>';
 		else
 			return "Binary file differs";