diff --git a/src/backend/globals.h b/src/backend/globals.h
index 33d1aa55..2df0f087 100644
--- a/src/backend/globals.h
+++ b/src/backend/globals.h
@@ -47,6 +47,7 @@ namespace boss {
     extern const unsigned int g_lang_russian;
     extern const unsigned int g_lang_french;
     extern const unsigned int g_lang_chinese;
+    extern const unsigned int g_lang_polish;
 
     //Version numbers.
     extern const unsigned int g_version_major;