diff --git a/man7/hier.7 b/man7/hier.7
index 82568fa1c..32184e9ca 100644
--- a/man7/hier.7
+++ b/man7/hier.7
@@ -228,7 +228,7 @@ placed in this directory.
 Commands for the MH mail handling system (optional).
 .TP
 .I /usr/bin/X11
-is the traditional place to look for X11 executables; on Linux, it
+This is the traditional place to look for X11 executables; on Linux, it
 usually is a symbolic link to
 .IR /usr/X11R6/bin .
 .TP