diff --git a/lib/parse.js b/lib/parse.js
index 8c243b43..6e51ae70 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -157,7 +157,7 @@ function is_unicode_connector_punctuation(ch) {
 function is_identifier(name, strict_mode) {
     return !RESERVED_WORDS(name) 
         && /^[a-z_$][a-z0-9_$]*$/i.test(name)
-        && (!strict_mode || strict_mode && !RESERVED_WORDS_STRICT_ONLY(name));
+        && (!strict_mode || !RESERVED_WORDS_STRICT_ONLY(name));
 };
 
 function is_identifier_start(code) {