--- a/src/DLD-FUNCTIONS/dot.cc
+++ b/src/DLD-FUNCTIONS/dot.cc
@@ -111,8 +111,9 @@
 given, calculate the dot products along this dimension.\n\
 \n\
 This is equivalent to doing @code{sum (conj (@var{X}) .* @var{Y}, @var{dim})},\n\
-but avoids forming a temporary array and uses the BLAS xDOT functions,\n\
-usually resulting in increased accuracy of the computation.\n\
+but avoids forming a temporary array and is faster.\n\
+When @var{X} and @var{Y} are column vectors, the result is equivalent to\n\
+@code{ @var{X}'*@var{Y} }.\n\
 @end deftypefn")
 {
   octave_value retval;