diff --git a/querydsl-core/src/main/java/com/mysema/query/types/OperationImpl.java b/querydsl-core/src/main/java/com/mysema/query/types/OperationImpl.java
index b5ea624fb..2fe3f08ca 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/OperationImpl.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/OperationImpl.java
@@ -13,13 +13,12 @@
  */
 package com.mysema.query.types;
 
+import javax.annotation.concurrent.Immutable;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.lang.reflect.Field;
 import java.util.List;
 
-import javax.annotation.concurrent.Immutable;
-
 import com.google.common.collect.ImmutableList;
 
 
@@ -104,9 +103,12 @@ public class OperationImpl<T> extends ExpressionBase<T> implements Operation<T>
             Field field = OperationImpl.class.getDeclaredField("operator");
             field.setAccessible(true);
             field.set(this, OperatorImpl.OPS.get(operator.getId()));
-        } catch (Exception e) {
+        } catch (NoSuchFieldException e) {
+            throw new RuntimeException(e);
+        } catch (IllegalAccessException e) {
             throw new RuntimeException(e);
         }
+
     }
 
 }
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/PathMetadata.java b/querydsl-core/src/main/java/com/mysema/query/types/PathMetadata.java
index 79ed1ef58..59fcafc14 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/PathMetadata.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/PathMetadata.java
@@ -106,7 +106,9 @@ public final class PathMetadata<T> implements Serializable{
             Field field = PathMetadata.class.getDeclaredField("hashCode");
             field.setAccessible(true);
             field.set(this, 31 * element.hashCode() + pathType.hashCode());
-        } catch (Exception e) {
+        } catch (NoSuchFieldException e) {
+            throw new RuntimeException(e);
+        } catch (IllegalAccessException e) {
             throw new RuntimeException(e);
         }
     }
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/DslExpression.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/DslExpression.java
index 0090123c3..6862e0b26 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/DslExpression.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/DslExpression.java
@@ -13,11 +13,10 @@
  */
 package com.mysema.query.types.expr;
 
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.lang.reflect.Field;
-
-import com.mysema.query.types.*;
+import com.mysema.query.types.Expression;
+import com.mysema.query.types.Ops;
+import com.mysema.query.types.Path;
+import com.mysema.query.types.PathImpl;
 
 /**
  * DslExpression is the base class for DSL expressions, but {@link SimpleExpression} is the base class
@@ -32,11 +31,8 @@ public abstract class DslExpression<T> implements Expression<T> {
 
     protected final Expression<T> mixin;
 
-    protected transient final int hashCode;
-
     public DslExpression(Expression<T> mixin) {
         this.mixin = mixin;
-        this.hashCode = mixin.hashCode();
     }
 
     @Override
@@ -70,7 +66,7 @@ public abstract class DslExpression<T> implements Expression<T> {
 
     @Override
     public final int hashCode() {
-        return hashCode;
+        return mixin.hashCode();
     }
 
     @Override
@@ -78,16 +74,4 @@ public abstract class DslExpression<T> implements Expression<T> {
         return mixin.toString();
     }
 
-    private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException {
-        try {
-            ois.defaultReadObject();
-            Field field = DslExpression.class.getDeclaredField("hashCode");
-            field.setAccessible(true);
-            field.set(this, mixin.hashCode());
-        } catch (Exception e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-
 }