diff --git a/mobile/android/chrome/content/browser.js b/mobile/android/chrome/content/browser.js
index e43bbc2d2934..b83be4211787 100644
--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -1523,8 +1523,9 @@ var BrowserApp = {
         let url = data.url;
         let flags;
 
-        if (/^[0-9]+$/.test(url)) {
-          // If the query is a number, force a search (see bug 993705; workaround for bug 693808).
+        if (!data.engine && /^[0-9]+$/.test(url)) {
+          // If the query is a number and we're not using a search engine,
+          // force a search (see bug 993705; workaround for bug 693808).
           url = URIFixup.keywordToURI(url).spec;
         } else {
           flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |