diff --git a/thanm/thanm.c b/thanm/thanm.c
index 569792a1..eef7d50d 100644
--- a/thanm/thanm.c
+++ b/thanm/thanm.c
@@ -55,23 +55,25 @@ unsigned int option_force;
 
 static const id_format_pair_t formats_v0[] = {
     { 0, "" },
-    { 1, "S" },
+    { 1, "n" },
     { 2, "ff" },
     { 3, "S" },
     { 4, "S" },
-    { 5, "S" },
+    { 5, "o" },
+    { 6, "" },
     { 7, "" },
+    { 8, "" },
     { 9, "fff" },
-    { 10, "fSf" },
+    { 10, "fff" },
     { 11, "ff" },
     { 12, "SS" },
     { 13, "" },
     { 14, "" },
     { 15, "" },
-    { 16, "SS" },
+    { 16, "nS" },
     { 17, "fff" },
-    { 18, "ffSS" },
-    { 19, "ffSS" },
+    { 18, "fffS" },
+    { 19, "fffS" },
     { 20, "fffS" },
     { 21, "" },
     { 22, "S" },