diff --git a/src/main/java/org/apache/commons/lang3/StringUtils.java b/src/main/java/org/apache/commons/lang3/StringUtils.java
index f2faa68e7..cb3579640 100644
--- a/src/main/java/org/apache/commons/lang3/StringUtils.java
+++ b/src/main/java/org/apache/commons/lang3/StringUtils.java
@@ -1013,6 +1013,7 @@ public class StringUtils {
      * returning {@code true} if the <code>string</code> is equal to any of the <code>searchStrings</code>.</p>
      *
      * <pre>
+     * StringUtils.equalsAny(null, (CharSequence[]) null) = false
      * StringUtils.equalsAny(null, null, null)    = true
      * StringUtils.equalsAny(null, "abc", "def")  = false
      * StringUtils.equalsAny("abc", null, "def")  = false
@@ -1043,6 +1044,7 @@ public class StringUtils {
      * returning {@code true} if the <code>string</code> is equal to any of the <code>searchStrings</code>, ignoring case.</p>
      *
      * <pre>
+     * StringUtils.equalsAnyIgnoreCase(null, (CharSequence[]) null) = false
      * StringUtils.equalsAnyIgnoreCase(null, null, null)    = true
      * StringUtils.equalsAnyIgnoreCase(null, "abc", "def")  = false
      * StringUtils.equalsAnyIgnoreCase("abc", null, "def")  = false
diff --git a/src/test/java/org/apache/commons/lang3/StringUtilsEqualsIndexOfTest.java b/src/test/java/org/apache/commons/lang3/StringUtilsEqualsIndexOfTest.java
index cf6b815fc..8750de3f1 100644
--- a/src/test/java/org/apache/commons/lang3/StringUtilsEqualsIndexOfTest.java
+++ b/src/test/java/org/apache/commons/lang3/StringUtilsEqualsIndexOfTest.java
@@ -595,6 +595,12 @@ public class StringUtilsEqualsIndexOfTest  {
         assertFalse(StringUtils.equalsAny(FOO, null, BAR));
         assertTrue(StringUtils.equalsAny(FOO, BAR, null, "", FOO, BAR));
         assertFalse(StringUtils.equalsAny(FOO, FOO.toUpperCase()));
+
+        assertFalse(StringUtils.equalsAny(null, (CharSequence[]) null));
+        assertTrue(StringUtils.equalsAny(FOO, new CustomCharSequence("foo")));
+        assertTrue(StringUtils.equalsAny(FOO, new StringBuilder("foo")));
+        assertFalse(StringUtils.equalsAny(FOO, new CustomCharSequence("fOo")));
+        assertFalse(StringUtils.equalsAny(FOO, new StringBuilder("fOo")));
     }
 
     @Test
@@ -617,6 +623,10 @@ public class StringUtilsEqualsIndexOfTest  {
         assertFalse(StringUtils.equalsAnyIgnoreCase(FOO, null, BAR));
         assertTrue(StringUtils.equalsAnyIgnoreCase(FOO, BAR, null, "", FOO.toUpperCase(), BAR));
         assertTrue(StringUtils.equalsAnyIgnoreCase(FOO, FOO.toUpperCase()));
+
+        assertFalse(StringUtils.equalsAnyIgnoreCase(null, (CharSequence[]) null));
+        assertTrue(StringUtils.equalsAnyIgnoreCase(FOO, new CustomCharSequence("fOo")));
+        assertTrue(StringUtils.equalsAnyIgnoreCase(FOO, new StringBuilder("fOo")));
     }
 
     //-----------------------------------------------------------------------