diff --git a/usr.bin/fmt/fmt.1 b/usr.bin/fmt/fmt.1
index 2760430e5546..e2937385aa6e 100644
--- a/usr.bin/fmt/fmt.1
+++ b/usr.bin/fmt/fmt.1
@@ -40,7 +40,7 @@
 .Nd simple text formatter
 .Sh SYNOPSIS
 .Nm
-.Fl c
+.Op Fl c
 .Oo
 .Ar goal
 .Op Ar maximum