diff --git a/man3/catopen.3 b/man3/catopen.3
index 541f7c6af..54558d8d3 100644
--- a/man3/catopen.3
+++ b/man3/catopen.3
@@ -42,7 +42,7 @@ The descriptor remains valid until
 .BR catclose ()
 or
 .BR execve (2).
-If a file descriptor is used to implement catalog descriptors
+If a file descriptor is used to implement catalog descriptors,
 then the
 .B FD_CLOEXEC
 flag will be set.
@@ -95,7 +95,7 @@ argument to
 .BR catopen ()
 is used to indicate the source for the language to use.
 If it is set to
-.B NL_CAT_LOCALE
+.BR NL_CAT_LOCALE ,
 then it will use the current locale setting for
 .BR LC_MESSAGES .
 Otherwise it will use the