diff --git a/lib/Connection.js b/lib/Connection.js
index f4063e8..dd7a5e2 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -1689,7 +1689,10 @@ function buildSearchQuery(options, extensions, info, isOrChild) {
     if (criteria === 'OR') {
       if (args.length !== 2)
         throw new Error('OR must have exactly two arguments');
-      searchargs += ' OR (';
+      if (isOrChild)
+        searchargs += 'OR (';
+      else
+        searchargs += ' OR (';
       searchargs += buildSearchQuery(args[0], extensions, info, true);
       searchargs += ') (';
       searchargs += buildSearchQuery(args[1], extensions, info, true);