diff --git a/contrib/tcsh/tcsh.man b/contrib/tcsh/tcsh.man
--- a/contrib/tcsh/tcsh.man
+++ b/contrib/tcsh/tcsh.man
@@ -3874,7 +3874,7 @@
 See also the \fBcwd\fR and \fBowd\fR shell variables.
 .TP 8
 .B dspmbyte \fR(+)
-Has an effect iff 'dspm' is listed as part of the \fBversion\fR shell variable.
+Has an effect if 'dspm' is listed as part of the \fBversion\fR shell variable.
 If set to `euc', it enables display and editing EUC-kanji(Japanese) code.
 If set to `sjis', it enables display and editing Shift-JIS(Japanese) code.
 If set to `big5', it enables display and editing Big5(Chinese) code.