diff --git a/sys/man/8/plan9.ini b/sys/man/8/plan9.ini
index 941f03867..61115f7fd 100644
--- a/sys/man/8/plan9.ini
+++ b/sys/man/8/plan9.ini
@@ -867,7 +867,7 @@ Also, the delay before any messages appear at boot time
 is disconcerting, as any error messages from the BIOS
 are lost.
 .PP
-The declaration of a kernel parameter wich is a prefix of
+The declaration of a kernel parameter which is a prefix of
 previously declared parameters will delete the previous
 ones. If this is not desired, parameters should be given
 in shortest to longest order.