diff --git a/src/spellchecker_mac.mm b/src/spellchecker_mac.mm
index abbb496..9773ded 100644
--- a/src/spellchecker_mac.mm
+++ b/src/spellchecker_mac.mm
@@ -180,7 +180,7 @@
 }
 
 void MacSpellchecker::UpdateGlobalSpellchecker() {
-  const NSString* autoLangauge = @"___AUTO_LANGUAGE";
+  NSString* autoLangauge = @"___AUTO_LANGUAGE";
   NSString* globalLang = currentGlobalLanguage ? currentGlobalLanguage : autoLangauge;
   NSString* ourLang = this->spellCheckerLanguage ? this->spellCheckerLanguage : autoLangauge;