diff --git a/man/man5/zpool-features.5 b/man/man5/zpool-features.5
index a5cf7a9ede..2ab74f19b9 100644
--- a/man/man5/zpool-features.5
+++ b/man/man5/zpool-features.5
@@ -598,7 +598,8 @@ can turn on the \fBsha512\fR checksum on any dataset using
 and will return to being \fBenabled\fR once all filesystems that have
 ever had their checksum set to \fBsha512\fR are destroyed.
 
-Booting off of pools utilizing SHA-512/256 is supported.
+The \fBsha512\fR feature is not supported by GRUB and must not be used on
+the pool if GRUB needs to access the pool (e.g. for /boot).
 
 .RE
 
@@ -632,7 +633,8 @@ can turn on the \fBskein\fR checksum on any dataset using
 and will return to being \fBenabled\fR once all filesystems that have
 ever had their checksum set to \fBskein\fR are destroyed.
 
-Booting off of pools using \fBskein\fR is supported.
+The \fBskein\fR feature is not supported by GRUB and must not be used on
+the pool if GRUB needs to access the pool (e.g. for /boot).
 
 .RE
 
@@ -672,7 +674,8 @@ can turn on the \fBedonr\fR checksum on any dataset using the
 and will return to being \fBenabled\fR once all filesystems that have
 ever had their checksum set to \fBedonr\fR are destroyed.
 
-Booting off of pools using \fBedonr\fR is supported.
+The \fBedonr\fR feature is not supported by GRUB and must not be used on
+the pool if GRUB needs to access the pool (e.g. for /boot).
 
 .RE
 
diff --git a/man/man8/zfs.8 b/man/man8/zfs.8
index d475df6501..eaa98212f1 100644
--- a/man/man8/zfs.8
+++ b/man/man8/zfs.8
@@ -1191,9 +1191,9 @@ The
 and
 .Sy edonr
 checksum algorithms require enabling the appropriate features on the pool.
-These algorithms are not supported by GRUB and should not be set on the
-.Sy bootfs
-filesystem when using GRUB to boot the system.
+These pool features are not supported by GRUB and must not be used on the
+pool if GRUB needs to access the pool (e.g. for /boot).
+.Pp
 Please see
 .Xr zpool-features 5
 for more information on these algorithms.