diff --git a/docs/sudoers_timestamp.man.in b/docs/sudoers_timestamp.man.in
index 630ca9d6e..36ab46d92 100644
--- a/docs/sudoers_timestamp.man.in
+++ b/docs/sudoers_timestamp.man.in
@@ -60,14 +60,14 @@ Time stamp records have the following structure:
 .sp
 .RS 0n
 /* Time stamp entry types */
-#define TS_GLOBAL               0x01    /* not restricted by tty or ppid */
-#define TS_TTY                  0x02    /* restricted by tty */
-#define TS_PPID                 0x03    /* restricted by ppid */
-#define TS_LOCKEXCL             0x04    /* special lock record */
+#define TS_GLOBAL               0x01U   /* not restricted by tty or ppid */
+#define TS_TTY                  0x02U   /* restricted by tty */
+#define TS_PPID                 0x03U   /* restricted by ppid */
+#define TS_LOCKEXCL             0x04U   /* special lock record */
 
 /* Time stamp flags */
-#define TS_DISABLED             0x01    /* entry disabled */
-#define TS_ANYUID               0x02    /* ignore uid, only valid in key */
+#define TS_DISABLED             0x01U   /* entry disabled */
+#define TS_ANYUID               0x02U   /* ignore uid, only valid in key */
 
 struct timestamp_entry {
     unsigned short version;     /* version number */
diff --git a/docs/sudoers_timestamp.mdoc.in b/docs/sudoers_timestamp.mdoc.in
index 4ddefb09a..8856cee3d 100644
--- a/docs/sudoers_timestamp.mdoc.in
+++ b/docs/sudoers_timestamp.mdoc.in
@@ -58,14 +58,14 @@ number and a 16-bit record size.
 Time stamp records have the following structure:
 .Bd -literal
 /* Time stamp entry types */
-#define TS_GLOBAL               0x01    /* not restricted by tty or ppid */
-#define TS_TTY                  0x02    /* restricted by tty */
-#define TS_PPID                 0x03    /* restricted by ppid */
-#define TS_LOCKEXCL             0x04    /* special lock record */
+#define TS_GLOBAL               0x01U   /* not restricted by tty or ppid */
+#define TS_TTY                  0x02U   /* restricted by tty */
+#define TS_PPID                 0x03U   /* restricted by ppid */
+#define TS_LOCKEXCL             0x04U   /* special lock record */
 
 /* Time stamp flags */
-#define TS_DISABLED             0x01    /* entry disabled */
-#define TS_ANYUID               0x02    /* ignore uid, only valid in key */
+#define TS_DISABLED             0x01U   /* entry disabled */
+#define TS_ANYUID               0x02U   /* ignore uid, only valid in key */
 
 struct timestamp_entry {
     unsigned short version;     /* version number */