diff --git a/x86_64/print16.asm b/x86_64/print16.asm
index dada0fdf80c84ef56e194d7f1cd0b0433d0125a6..06b9fb120cc69e426a333bc18b3558404416d54d 100644
--- a/x86_64/print16.asm
+++ b/x86_64/print16.asm
@@ -3,8 +3,6 @@ USE16
 ; provide function for printing in x86 real mode
 
 ; print a string and a newline
-; IN
-;   si: points at zero-terminated String
 ; CLOBBER
 ;   ax
 print_line: