diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
index 11628eb13..215b3d2c8 100644
--- a/man2/ioctl_userfaultfd.2
+++ b/man2/ioctl_userfaultfd.2
@@ -267,8 +267,6 @@ is zero; or these fields are otherwise invalid.
 .TP
 .B EINVAL
 There as an incompatible mapping in the specified address range.
-.\" FIXME Above: What does "incompatible" mean?
-.\"
 .\" Mike Rapoport:
 .\" ENOMEM if the process is exiting and the
 .\" mm_struct has gone by the time userfault grabs it. 
@@ -304,7 +302,6 @@ field was zero; or these fields were otherwise invalid.
 .TP
 .B EINVAL
 There as an incompatible mapping in the specified address range.
-.\" FIXME Above: What does "incompatible" mean?
 .TP
 .B EINVAL
 There was no mapping in the specified address range.