diff --git a/cpdf.mli b/cpdf.mli
index 564d9a5..4345f71 100644
--- a/cpdf.mli
+++ b/cpdf.mli
@@ -204,7 +204,7 @@ swapped.  If [fast] is true, the PDFs are assumed to be well-formed and no
 fixes are done. *)
 val combine_pages : bool -> Pdf.t -> Pdf.t -> bool -> bool -> bool -> Pdf.t
 
-(** [stamp topline midline scale_to_fit position fast isover range over pdf] stamps the first page of
+(** [stamp position topline midline scale_to_fit fast isover range over pdf] stamps the first page of
 [over] over each page of the PDF. The arguments have the same meaning as in
 [combine_pages]. *)
 val stamp : position -> bool -> bool -> bool -> bool -> bool -> int list -> Pdf.t -> Pdf.t -> Pdf.t