diff --git a/querydsl-core/src/main/java/com/mysema/query/SimplePathFactory.java b/querydsl-core/src/main/java/com/mysema/query/SimplePathFactory.java
index 02929d3de..662b6b7ca 100644
--- a/querydsl-core/src/main/java/com/mysema/query/SimplePathFactory.java
+++ b/querydsl-core/src/main/java/com/mysema/query/SimplePathFactory.java
@@ -40,6 +40,7 @@ public class SimplePathFactory implements PathFactory {
     });
     
     private final Map<Object,PComparableArray<?>> caToPath = new PathFactory<Object,PComparableArray<?>>(new Transformer<Object,PComparableArray<?>>(){
+        @SuppressWarnings("unchecked")
         public PComparableArray<?> transform(Object arg) {
             return new PComparableArray(((List)arg).get(0).getClass(), md());
         }    
diff --git a/querydsl-core/src/main/java/com/mysema/query/grammar/types/Expr.java b/querydsl-core/src/main/java/com/mysema/query/grammar/types/Expr.java
index 5932e398e..d435d0250 100644
--- a/querydsl-core/src/main/java/com/mysema/query/grammar/types/Expr.java
+++ b/querydsl-core/src/main/java/com/mysema/query/grammar/types/Expr.java
@@ -89,6 +89,8 @@ public abstract class Expr<D>{
         public final EBoolean or(EBoolean right) {return Grammar.or(this, right);}
     }        
     
+    // <D extends Comparable> is used instead of <D extends Comparable<? super D> 
+    // to support pre-JDK1.5 types such as Joda time    
     @SuppressWarnings("unchecked")
     public static abstract class EComparable<D extends Comparable> extends ESimple<D>{
         private OrderSpecifier<D> asc;