diff --git a/src/common/intl.cpp b/src/common/intl.cpp
index 9efed8b554..8dcb64784c 100644
--- a/src/common/intl.cpp
+++ b/src/common/intl.cpp
@@ -513,6 +513,7 @@ void wxMsgCatalogFile::FillHash(wxMessagesHash& hash, bool convertEncoding) cons
         }
     }
 #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
+    (void)convertEncoding; // get rid of warnings about unused parameter
 }
 
 wxString wxMsgCatalogFile::GetCharset() const