diff --git a/projects/samskivert/src/java/com/samskivert/swing/util/TaskMaster.java b/projects/samskivert/src/java/com/samskivert/swing/util/TaskMaster.java
index 724d1842..1a68dd48 100644
--- a/projects/samskivert/src/java/com/samskivert/swing/util/TaskMaster.java
+++ b/projects/samskivert/src/java/com/samskivert/swing/util/TaskMaster.java
@@ -171,9 +171,9 @@ public class TaskMaster
         public Object invoke () throws Exception
         {
             // look up the named method on the source object and invoke it
-            Method meth = _source.getClass().getMethod(_name, null);
+            Method meth = _source.getClass().getMethod(_name, (Class[]) null);
             meth.setAccessible(true);
-            return meth.invoke(_source, null);
+            return meth.invoke(_source, (Object[]) null);
         }
 
         public boolean abort ()
diff --git a/projects/samskivert/src/java/com/samskivert/util/StringUtil.java b/projects/samskivert/src/java/com/samskivert/util/StringUtil.java
index 68f867a0..c999a0fb 100644
--- a/projects/samskivert/src/java/com/samskivert/util/StringUtil.java
+++ b/projects/samskivert/src/java/com/samskivert/util/StringUtil.java
@@ -658,7 +658,7 @@ public class StringUtil
                 try {
                     Method meth = clazz.getMethod(
                         fields[i].getName() + "ToString", new Class[0]);
-                    buf.append(meth.invoke(object, null));
+                    buf.append(meth.invoke(object, (Object[]) null));
                 } catch (NoSuchMethodException nsme) {
                     toString(buf, fields[i].get(object));
                 }