--- a/toolkit/components/places/PlacesSearchAutocompleteProvider.jsm
+++ b/toolkit/components/places/PlacesSearchAutocompleteProvider.jsm
@@ -237,17 +237,17 @@ this.PlacesSearchAutocompleteProvider = 
    *           engineName: The display name of the search engine.
    *           iconUrl: Icon associated to the match, or null if not available.
    *         }
    */
   findMatchByAlias: Task.async(function* (searchToken) {
     yield this.ensureInitialized();
 
     return SearchAutocompleteProviderInternal.aliasMatches
-                                             .find(m => m.alias == searchToken);
+             .find(m => m.alias.toLocaleLowerCase() == searchToken.toLocaleLowerCase());
   }),
 
   getDefaultMatch: Task.async(function* () {
     yield this.ensureInitialized();
 
     return SearchAutocompleteProviderInternal.defaultMatch;
   }),
 

--- a/toolkit/components/places/tests/unit/test_PlacesSearchAutocompleteProvider.js
+++ b/toolkit/components/places/tests/unit/test_PlacesSearchAutocompleteProvider.js
@@ -45,21 +45,54 @@ add_task(function* add_search_engine_mat
   let match = yield PlacesSearchAutocompleteProvider.findMatchByToken("bacon");
   do_check_eq(match.url, "http://www.bacon.moz");
   do_check_eq(match.engineName, "bacon");
   do_check_eq(match.iconUrl, null);
 });
 
 add_task(function* test_aliased_search_engine_match() {
   do_check_eq(null, yield PlacesSearchAutocompleteProvider.findMatchByAlias("sober"));
-
+  // Lower case
   let match = yield PlacesSearchAutocompleteProvider.findMatchByAlias("pork");
   do_check_eq(match.engineName, "bacon");
   do_check_eq(match.alias, "pork");
   do_check_eq(match.iconUrl, null);
+  // Upper case
+  let match1 = yield PlacesSearchAutocompleteProvider.findMatchByAlias("PORK");
+  do_check_eq(match1.engineName, "bacon");
+  do_check_eq(match1.alias, "pork");
+  do_check_eq(match1.iconUrl, null);
+  // Cap case
+  let match2 = yield PlacesSearchAutocompleteProvider.findMatchByAlias("Pork");
+  do_check_eq(match2.engineName, "bacon");
+  do_check_eq(match2.alias, "pork");
+  do_check_eq(match2.iconUrl, null);
+});
+
+add_task(function* test_aliased_search_engine_match_upper_case_alias() {
+  let promiseTopic = promiseSearchTopic("engine-added");
+  do_check_eq(null, yield PlacesSearchAutocompleteProvider.findMatchByToken("patch"));
+  Services.search.addEngineWithDetails("patch", "", "PR", "Search Patch",
+                                       "GET", "http://www.patch.moz/?search={searchTerms}");
+  yield promiseSearchTopic;
+  // lower case
+  let match = yield PlacesSearchAutocompleteProvider.findMatchByAlias("pr");
+  do_check_eq(match.engineName, "patch");
+  do_check_eq(match.alias, "PR");
+  do_check_eq(match.iconUrl, null);
+  // Upper case
+  let match1 = yield PlacesSearchAutocompleteProvider.findMatchByAlias("PR");
+  do_check_eq(match1.engineName, "patch");
+  do_check_eq(match1.alias, "PR");
+  do_check_eq(match1.iconUrl, null);
+  // Cap case
+  let match2 = yield PlacesSearchAutocompleteProvider.findMatchByAlias("Pr");
+  do_check_eq(match2.engineName, "patch");
+  do_check_eq(match2.alias, "PR");
+  do_check_eq(match2.iconUrl, null);
 });
 
 add_task(function* remove_search_engine_nomatch() {
   let engine = Services.search.getEngineByName("bacon");
   let promiseTopic = promiseSearchTopic("engine-removed");
   Services.search.removeEngine(engine);
   yield promiseTopic;
   do_check_eq(null, yield PlacesSearchAutocompleteProvider.findMatchByToken("bacon"));