diff --git a/src/charset.c b/src/charset.c
index 15975a4..107647f 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -646,7 +646,7 @@ load_charset (charset, control_flag)
   if (inhibit_load_charset_map
       && temp_charset_work
       && charset == temp_charset_work->current
-      && (control_flag == 2 == temp_charset_work->for_encoder))
+      && ((control_flag == 2) == temp_charset_work->for_encoder))
     return;
 
   if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP)