diff --git a/src/java/com/samskivert/util/GenUtil.java b/src/java/com/samskivert/util/GenUtil.java
index c8eacbcb..d2925213 100644
--- a/src/java/com/samskivert/util/GenUtil.java
+++ b/src/java/com/samskivert/util/GenUtil.java
@@ -24,6 +24,7 @@ import java.lang.reflect.Field;
 import java.lang.reflect.GenericArrayType;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
+import java.lang.reflect.WildcardType;
 
 /**
  * Utility methods for code that generates code.
@@ -67,6 +68,27 @@ public class GenUtil
                 buf.append(simpleName(arg));
             }
             return simpleName(pt.getRawType()) + "<" + buf + ">";
+
+        } else if (type instanceof WildcardType) {
+            WildcardType wt = (WildcardType)type;
+            if (wt.getLowerBounds().length > 0) {
+                String errmsg = "Generation of simple name for wildcard type with lower bounds " +
+                    "not implemented [type=" + type +
+                    ", lbounds=" + StringUtil.toString(wt.getLowerBounds()) + "]";
+                throw new IllegalArgumentException(errmsg);
+            }
+            if (wt.getUpperBounds().length > 1) {
+                String errmsg = "Generation of simple name for wildcard type with multiple upper " +
+                    "bounds not implemented [type=" + type +
+                    ", ubounds=" + StringUtil.toString(wt.getUpperBounds()) + "]";
+                throw new IllegalArgumentException(errmsg);
+            }
+            StringBuilder buf = new StringBuilder("?");
+            if (!Object.class.equals(wt.getUpperBounds()[0])) {
+                buf.append(" extends ").append(simpleName(wt.getUpperBounds()[0]));
+            }
+            return buf.toString();
+
         } else {
             throw new IllegalArgumentException("Can't generate simple name [type=" + type +
                                                ", tclass=" + StringUtil.shortClassName(type) + "]");