diff --git a/lib/libsys/munmap.2 b/lib/libsys/munmap.2
index 560ed005626..d6b53f1bcf1 100644
--- a/lib/libsys/munmap.2
+++ b/lib/libsys/munmap.2
@@ -55,7 +55,7 @@ will fail if:
 .It Bq Er EINVAL
 The
 .Fa len
-argument was zero or negative, or
+argument was zero, or
 some part of the region being unmapped is outside the
 valid address range for a process.
 .El