diff --git a/toolkit/mozapps/downloads/content/DownloadProgressListener.js b/toolkit/mozapps/downloads/content/DownloadProgressListener.js
index b3be75aa63fc..719d6a9ea3f6 100644
--- a/toolkit/mozapps/downloads/content/DownloadProgressListener.js
+++ b/toolkit/mozapps/downloads/content/DownloadProgressListener.js
@@ -218,8 +218,14 @@ DownloadProgressListener.prototype =
     
     var format = "";
     if (!progressHasMB && !totalHasMB) {
-      format = this._statusFormatUnknownKB;
-      format = this._replaceInsert(format, 1, aKBytes);
+      if (!aTotalKBytes) {
+      	 format = this._statusFormatUnknownKB;
+        format = this._replaceInsert(format, 1, aKBytes);
+      } else {
+        format = this._statusFormatKBKB;
+        format = this._replaceInsert(format, 1, aKBytes);
+        format = this._replaceInsert(format, 2, aTotalKBytes);
+      }
     }
     else if (progressHasMB && totalHasMB) {
       format = this._statusFormatMBMB;