--- determ.txi.orig	2013-05-12 04:47:55 UTC
+++ determ.txi
@@ -53,11 +53,13 @@
 @defun matrix:product m1 m2
 
 Returns the product of matrices @var{m1} and @var{m2}.
+@end defun
 
-@defunx matrix:product m1 z
+@defun matrix:product m1 z
 Returns matrix @var{m1} times scalar @var{z}.
+@end defun
 
-@defunx matrix:product z m1
+@defun matrix:product z m1
 Returns matrix @var{m1} times scalar @var{z}.
 @end defun