diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/NumberExpression.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/NumberExpression.java
index e77668c3b..273047f66 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/NumberExpression.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/NumberExpression.java
@@ -73,7 +73,7 @@ public abstract class NumberExpression<T extends Number & Comparable<?>> extends
     }
 
     @Nullable
-    private volatile NumberExpression<T> abs, sum, min, max, floor, ceil;
+    private volatile NumberExpression<T> abs, sum, min, max, floor, ceil, round;
 
     @Nullable
     private volatile NumberExpression<Double> avg, sqrt;
@@ -81,9 +81,6 @@ public abstract class NumberExpression<T extends Number & Comparable<?>> extends
     @Nullable
     private volatile NumberExpression<T> negation;
 
-    @Nullable
-    private volatile NumberExpression<Integer> round;
-
     public NumberExpression(Expression<T> mixin) {
         super(mixin);
     }
@@ -611,9 +608,9 @@ public abstract class NumberExpression<T extends Number & Comparable<?>> extends
      * @see java.lang.Math#round(double)
      * @see java.lang.Math#round(float)
      */
-    public NumberExpression<Integer> round() {
+    public NumberExpression<T> round() {
         if (round == null) {
-            round = NumberOperation.create(Integer.class, MathOps.ROUND, mixin);
+	    round = NumberOperation.create(getType(), MathOps.ROUND, mixin);
         }
         return round;
     }