diff --git a/lib/ace/commands/incremental_search_commands.js b/lib/ace/commands/incremental_search_commands.js
index 986fb56e..d7c99feb 100644
--- a/lib/ace/commands/incremental_search_commands.js
+++ b/lib/ace/commands/incremental_search_commands.js
@@ -98,7 +98,7 @@ exports.iSearchCommands = [{
 }, {
     name: "extendSearchTermSpace",
     bindKey: "space",
-    exec: function(iSearch) { iSearch.$editor.execCommand("extendSearchTerm", ' '); },
+    exec: function(iSearch) { iSearch.addChar(' '); },
     readOnly: true,
     isIncrementalSearchCommand: true
 }, {