diff --git a/src/main/java/org/apache/commons/lang3/time/DateFormatUtils.java b/src/main/java/org/apache/commons/lang3/time/DateFormatUtils.java
index 47aaf4551..4315e4742 100644
--- a/src/main/java/org/apache/commons/lang3/time/DateFormatUtils.java
+++ b/src/main/java/org/apache/commons/lang3/time/DateFormatUtils.java
@@ -42,28 +42,28 @@ public class DateFormatUtils {
     private static final TimeZone UTC_TIME_ZONE = TimeZone.getTimeZone("GMT");
     /**
      * ISO 8601 formatter for date-time without time zone.
-     * The format used is <tt>yyyy-MM-dd'T'HH:mm:ss</tt>.
+     * The format used is {@code yyyy-MM-dd'T'HH:mm:ss}.
      */
     public static final FastDateFormat ISO_DATETIME_FORMAT
             = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ss");
 
     /**
      * ISO 8601 formatter for date-time with time zone.
-     * The format used is <tt>yyyy-MM-dd'T'HH:mm:ssZZ</tt>.
+     * The format used is {@code yyyy-MM-dd'T'HH:mm:ssZZ}.
      */
     public static final FastDateFormat ISO_DATETIME_TIME_ZONE_FORMAT
             = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ssZZ");
 
     /**
      * ISO 8601 formatter for date without time zone.
-     * The format used is <tt>yyyy-MM-dd</tt>.
+     * The format used is {@code yyyy-MM-dd}.
      */
     public static final FastDateFormat ISO_DATE_FORMAT
             = FastDateFormat.getInstance("yyyy-MM-dd");
 
     /**
      * ISO 8601-like formatter for date with time zone.
-     * The format used is <tt>yyyy-MM-ddZZ</tt>.
+     * The format used is {@code yyyy-MM-ddZZ}.
      * This pattern does not comply with the formal ISO 8601 specification
      * as the standard does not allow a time zone  without a time.
      */
@@ -72,21 +72,21 @@ public class DateFormatUtils {
 
     /**
      * ISO 8601 formatter for time without time zone.
-     * The format used is <tt>'T'HH:mm:ss</tt>.
+     * The format used is {@code 'T'HH:mm:ss}.
      */
     public static final FastDateFormat ISO_TIME_FORMAT
             = FastDateFormat.getInstance("'T'HH:mm:ss");
 
     /**
      * ISO 8601 formatter for time with time zone.
-     * The format used is <tt>'T'HH:mm:ssZZ</tt>.
+     * The format used is {@code 'T'HH:mm:ssZZ}.
      */
     public static final FastDateFormat ISO_TIME_TIME_ZONE_FORMAT
             = FastDateFormat.getInstance("'T'HH:mm:ssZZ");
 
     /**
      * ISO 8601-like formatter for time without time zone.
-     * The format used is <tt>HH:mm:ss</tt>.
+     * The format used is {@code HH:mm:ss}.
      * This pattern does not comply with the formal ISO 8601 specification
      * as the standard requires the 'T' prefix for times.
      */
@@ -95,7 +95,7 @@ public class DateFormatUtils {
 
     /**
      * ISO 8601-like formatter for time with time zone.
-     * The format used is <tt>HH:mm:ssZZ</tt>.
+     * The format used is {@code HH:mm:ssZZ}.
      * This pattern does not comply with the formal ISO 8601 specification
      * as the standard requires the 'T' prefix for times.
      */
@@ -104,7 +104,7 @@ public class DateFormatUtils {
 
     /**
      * SMTP (and probably other) date headers.
-     * The format used is <tt>EEE, dd MMM yyyy HH:mm:ss Z</tt> in US locale.
+     * The format used is {@code EEE, dd MMM yyyy HH:mm:ss Z} in US locale.
      */
     public static final FastDateFormat SMTP_DATETIME_FORMAT
             = FastDateFormat.getInstance("EEE, dd MMM yyyy HH:mm:ss Z", Locale.US);