diff --git a/src/api/api.h b/src/api/api.h
index 9ff7d8d7..ee66a252 100644
--- a/src/api/api.h
+++ b/src/api/api.h
@@ -175,6 +175,7 @@ BOSS_API extern const unsigned int boss_lang_spanish;  ///< Tells the API to pre
 BOSS_API extern const unsigned int boss_lang_russian;  ///< Tells the API to preferentially select Russian messages.
 BOSS_API extern const unsigned int boss_lang_french;  ///< Tells the API to preferentially select French messages.
 BOSS_API extern const unsigned int boss_lang_chinese;  ///< Tells the API to preferentially select Chinese messages.
+BOSS_API extern const unsigned int boss_lang_polish;  ///< Tells the API to preferentially select Polish messages.
 ///@}
 
 /*********************************//**