diff --git a/src/factory/PVDataCreateFactory.cpp b/src/factory/PVDataCreateFactory.cpp
index 53c4854..6412548 100644
--- a/src/factory/PVDataCreateFactory.cpp
+++ b/src/factory/PVDataCreateFactory.cpp
@@ -156,6 +156,9 @@ PVValueArray<PVUnionPtr>::PVValueArray(UnionArrayConstPtr const & unionArray)
     ,unionArray(unionArray)
 {}
 
+template<typename T>
+PVValueArray<T>::~PVValueArray() {}
+
 template<typename T>
 void PVValueArray<T>::setCapacity(size_t capacity)
 {
diff --git a/src/pv/pvData.h b/src/pv/pvData.h
index 11aaad6..31934c6 100644
--- a/src/pv/pvData.h
+++ b/src/pv/pvData.h
@@ -1157,7 +1157,7 @@ public:
     /**
      * Destructor
      */
-    virtual ~PVValueArray() {}
+    virtual ~PVValueArray();
 
     /**
      * Get introspection interface.