diff --git a/src/main/java/us/springett/parsers/cpe/Cpe.java b/src/main/java/us/springett/parsers/cpe/Cpe.java
index 4502415..d8c0b9e 100644
--- a/src/main/java/us/springett/parsers/cpe/Cpe.java
+++ b/src/main/java/us/springett/parsers/cpe/Cpe.java
@@ -582,9 +582,16 @@ public boolean matchedBy(ICpe target) {
      * otherwise <code>false</code>
      */
     protected static boolean compareAttributes(Part left, Part right) {
+        //1 6 9 - equals
         if (left == right) {
             return true;
-        } else if (left == Part.ANY) {
+        }
+        //2 3 - superset (4 does not apply due to enum)
+        else if (left == Part.ANY) {
+            return true;
+        }
+        //5 13 - subset (15 does not apply due to enum)
+        else if (right == Part.ANY) {
             return true;
         }
         return false;
diff --git a/src/test/java/us/springett/parsers/cpe/CpeTest.java b/src/test/java/us/springett/parsers/cpe/CpeTest.java
index 042ac6f..28fe79d 100644
--- a/src/test/java/us/springett/parsers/cpe/CpeTest.java
+++ b/src/test/java/us/springett/parsers/cpe/CpeTest.java
@@ -769,7 +769,7 @@ public void testCompareAttributes_Part_Part() {
         assertFalse(Cpe.compareAttributes(Part.APPLICATION, Part.HARDWARE_DEVICE));
         assertFalse(Cpe.compareAttributes(Part.APPLICATION, Part.OPERATING_SYSTEM));
         assertFalse(Cpe.compareAttributes(Part.APPLICATION, Part.NA));
-        assertFalse(Cpe.compareAttributes(Part.APPLICATION, Part.ANY));
+        assertTrue(Cpe.compareAttributes(Part.APPLICATION, Part.ANY));
 
         assertTrue(Cpe.compareAttributes(Part.ANY, Part.ANY));
         assertTrue(Cpe.compareAttributes(Part.ANY, Part.APPLICATION));
@@ -778,7 +778,7 @@ public void testCompareAttributes_Part_Part() {
         assertTrue(Cpe.compareAttributes(Part.ANY, Part.NA));
 
         assertTrue(Cpe.compareAttributes(Part.NA, Part.NA));
-        assertFalse(Cpe.compareAttributes(Part.NA, Part.ANY));
+        assertTrue(Cpe.compareAttributes(Part.NA, Part.ANY));
         assertFalse(Cpe.compareAttributes(Part.NA, Part.APPLICATION));
         assertFalse(Cpe.compareAttributes(Part.NA, Part.HARDWARE_DEVICE));
         assertFalse(Cpe.compareAttributes(Part.NA, Part.OPERATING_SYSTEM));