diff --git a/libmariadb/mariadb_lib.c b/libmariadb/mariadb_lib.c
index 1063f14e..d1677a84 100644
--- a/libmariadb/mariadb_lib.c
+++ b/libmariadb/mariadb_lib.c
@@ -3523,6 +3523,7 @@ int STDCALL mysql_set_character_set(MYSQL *mysql, const char *csname)
       mysql->charset= cs;
       return(0);
     }
+    return(mysql->net.last_errno);
   }
 
 error: