diff --git a/src/helpfile.h b/src/helpfile.h
index eed7c8a5..f9a31514 100644
--- a/src/helpfile.h
+++ b/src/helpfile.h
@@ -525,6 +525,7 @@ static const T_Help_table helptable_credits[] =
   HELP_TEXT ("  EGX : Targhan & Supersly / Cargosoft")
   HELP_TEXT ("  FLI,FLC : Autodesk")
   HELP_TEXT ("  GIF : Compuserve")
+  HELP_TEXT ("  GO1 : GraphOS")
   HELP_TEXT ("  GPL : The GIMP")
   HELP_TEXT ("  GPX : Pixcen (John Hammarberg/CRT)")
   HELP_TEXT ("  IFF : Electronic Arts")
@@ -532,6 +533,7 @@ static const T_Help_table helptable_credits[] =
   HELP_TEXT ("  INFO : Commodore")
   HELP_TEXT ("  KOA : Koala Technologies")
   HELP_TEXT ("  NEO : Atari Corporation")
+  HELP_TEXT ("  MOTO : Microsoft Corporation")
   HELP_TEXT ("  PAL : ermmh... nobody (?)")
   HELP_TEXT ("  PCX : Z-Soft")
   HELP_TEXT ("  PI1,PC1 : Degas Elite")
@@ -539,6 +541,7 @@ static const T_Help_table helptable_credits[] =
   HELP_TEXT ("  PNG : W3C")
   HELP_TEXT ("  PPH : Rhino / Batman Group")
   HELP_TEXT ("  SCx : Colorix (?)")
+  HELP_TEXT ("  SCR : Advanced OCP Art Studio + iMPdraw")
   HELP_TEXT ("  TIFF : Aldus (now Adobe)")
   HELP_TEXT ("  XPM : C.Nahaboo and D.Dardailler / Bull")
   HELP_TEXT ("")