diff --git a/src/generation/types.anubis b/src/generation/types.anubis
index 5c3ab39..32b82d3 100644
--- a/src/generation/types.anubis
+++ b/src/generation/types.anubis
@@ -127,7 +127,7 @@ public define Maybe(One)
      "  extract_from_web_arg\n"+
      "  (\n"+
      "    List(Web_arg) lwa,\n"+
-     "    String prefix\n"+
+     "    String __prefix__\n"+
      "  )=\n"+   //head of the definition
      to_String(list_of_web_arg)+                       //all editable components of the type
      "    success(\n"+generate_constructor(name, columns, "      ")+")\n"+         //generate type construction with values got from web arg
@@ -283,12 +283,14 @@ public define Maybe(One)
      "             \"update_"+name+" (INSERT)\")),\n"+
      //UPDATE SQL query
      "    db_id(idx) then\n"+
-     "      forget(sql_query_timeout(db,\n"+
+     "      if sql_query_timeout(db,\n"+
      "             \"UPDATE "+name+" SET\n"+
      update_values(columns, "             ")+"\n"+
      "             WHERE id = \"+idx+\";\",\n"+
      generate_Bind_list(columns, name, "             ", false)+",\n"+
-     "             \"update_"+name+" (UPDATE)\"))\n"+
+     "             \"update_"+name+" (UPDATE)\") is { \n"+
+     "                 error(sql_error)\n"+
+     "                   then logError(debug_log, db_error(sql_error, \"update_"+name+"\")), ok(_, _, _) then unique }\n"+
      "  }.\n\n"+
      "public define Maybe(One)\n"+
      "  update_"+name+"\n"+
@@ -298,7 +300,7 @@ public define Maybe(One)
      "  )=\n"+
      "  if extract_from_web_arg(lwa, \"\") is\n"+
      "  {\n"+
-     "    failure         then failure,\n"+
+     "    failure         then logError(debug_log, \"update_"+name+" extract_from_web_arg is failure\"); failure,\n"+
      "    success("+name+")  then success(update_"+name+"(db, "+name+"))\n"+
      "  }.\n\n"
   
--
libgit2 0.21.4