diff --git a/com.ibm.wala.core/src/com/ibm/wala/types/generics/TypeArgument.java b/com.ibm.wala.core/src/com/ibm/wala/types/generics/TypeArgument.java
index a326ff236..abba90781 100644
--- a/com.ibm.wala.core/src/com/ibm/wala/types/generics/TypeArgument.java
+++ b/com.ibm.wala.core/src/com/ibm/wala/types/generics/TypeArgument.java
@@ -19,9 +19,17 @@ import com.ibm.wala.util.debug.Assertions;
 /**
  * UNDER CONSTRUCTION
  * 
- * <verbatim> TypeArgument: WildcardIndicator? FieldTypeSignature *
+ * <verbatim> 
+ * TypeArgument: 
+ *     WildcardIndicator? FieldTypeSignature 
+ *     *
  * 
- * WildcardIndicator: + - </verbatim>
+ * WildcardIndicator: 
+ *    + 
+ *    - 
+ *    
+ *    
+ * </verbatim>
  * 
  * @author sjfink
  * 
@@ -42,6 +50,9 @@ public class TypeArgument extends Signature {
     public boolean isWildcard() {
       return true;
     }
+    public String toString() {
+      return "*";
+    }
   };
 
   private TypeArgument(String s) {
@@ -140,6 +151,11 @@ public class TypeArgument extends Signature {
         args.add(typeArgs.substring(off, i));
         continue;
       }
+      case (byte) '*': {
+        // a wildcard
+        args.add("*");
+        continue;
+      }
       case (byte) '>': // end of argument list
         int size = args.size();
         if (size == 0) {