diff --git a/manifest.json b/manifest.json
index bd79b89..c05b91b 100755
--- a/manifest.json
+++ b/manifest.json
@@ -1,6 +1,6 @@
 {
   "name": "NumTabs",
-  "version": "0.2",
+  "version": "0.4",
   "description": "Adds position numbers to the titles of tabs.",
   "background_page": "numtab.html",
   "icons": {
diff --git a/numtab.js b/numtab.js
index 660e602..44f9934 100755
--- a/numtab.js
+++ b/numtab.js
@@ -7,8 +7,8 @@
 			var title = document.title;
 			if(id !== old_id){
 				var len = 0;
-				if(old_id){
-					len = old_id.toString().length
+				if(old_id && /\d\s/g.test(title)){
+					len = 2;
 				}
 				title = id + " " + title.substr(len);
 				//console.log(title);
@@ -17,4 +17,4 @@
 			}
 		}, 100);
 	}
-})()
\ No newline at end of file
+})();
\ No newline at end of file
diff --git a/numtabs.zip b/numtabs.zip
index d0f62c6..0e547e3 100755
Binary files a/numtabs.zip and b/numtabs.zip differ