diff --git a/src/slic3r/GUI/HMS.cpp b/src/slic3r/GUI/HMS.cpp
index ef79798101..2bb7a78b37 100644
--- a/src/slic3r/GUI/HMS.cpp
+++ b/src/slic3r/GUI/HMS.cpp
@@ -143,6 +143,7 @@ std::string HMSQuery::hms_language_code()
         // set language code to en by default
         return "en";
     }
+    return lang_code;
 }
 
 std::string HMSQuery::get_hms_file()