diff --git a/pvDataApp/factory/AbstractPVScalar.h b/pvDataApp/factory/AbstractPVScalar.h
index 3f53f54..95c8bd8 100644
--- a/pvDataApp/factory/AbstractPVScalar.h
+++ b/pvDataApp/factory/AbstractPVScalar.h
@@ -13,7 +13,7 @@ namespace epics { namespace pvData {
 
     PVScalar::~PVScalar() {}
 
-    class AbstractPVScalar : public AbstractPVField, public  PVScalar {
+    class AbstractPVScalar : public AbstractPVField{
     public:
         AbstractPVScalar(PVStructure *parent,ScalarConstPtr scalar)
         : AbstractPVField(parent,scalar) {}
diff --git a/pvDataApp/factory/BasePVDouble.h b/pvDataApp/factory/BasePVDouble.h
index 109c81e..7dd7074 100644
--- a/pvDataApp/factory/BasePVDouble.h
+++ b/pvDataApp/factory/BasePVDouble.h
@@ -7,17 +7,16 @@
 #include <cstdio>
 #include "pvData.h"
 #include "factory.h"
-#include "AbstractPVField.h"
+#include "AbstractPVScalar.h"
 
 namespace epics { namespace pvData {
 
-    PVScalar::~PVScalar() {}
     PVDouble::~PVDouble() {}
 
-    class BasePVDouble : public AbstractPVField, public PVDouble {
+    class BasePVDouble : public AbstractPVScalar, public PVDouble {
     public:
         BasePVDouble(PVStructure *parent,ScalarConstPtr scalar)
-        : AbstractPVField(parent,scalar),value(0.0) {}
+        : AbstractPVScalar(parent,scalar),value(0.0) {}
         virtual ~BasePVDouble() {}
         // from Requester
         virtual StringConstPtr getRequesterName() const{