diff --git a/ares/ares_cancel.3 b/ares/ares_cancel.3
index fed7e4087..c01468222 100644
--- a/ares/ares_cancel.3
+++ b/ares/ares_cancel.3
@@ -33,5 +33,7 @@ might have been stored in their arguments.
 .SH SEE ALSO
 .BR ares_init (3)
 .BR ares_destroy (3)
+.SH NOTES
+This function is not compatible with ares.
 .SH AUTHOR
 Dirk Manske
diff --git a/ares/ares_strerror.3 b/ares/ares_strerror.3
index 1d88b8815..0a46cec49 100644
--- a/ares/ares_strerror.3
+++ b/ares/ares_strerror.3
@@ -30,7 +30,8 @@ function gets the description of the ares library error code
 .IR code ,
 returning the result as a NUL-terminated C string.
 .SH NOTES
-This function is not compatible with ares.
+This function is not compatible with ares, it takes a different set of
+arguments.
 .SH AUTHOR
 Greg Hudson, MIT Information Systems
 .br