diff --git a/include/wx/gtk/dataobj.h b/include/wx/gtk/dataobj.h
index 019d5f657f..52ea20c7bd 100644
--- a/include/wx/gtk/dataobj.h
+++ b/include/wx/gtk/dataobj.h
@@ -22,10 +22,8 @@ class wxDataObject : public wxDataObjectBase
 {
 public:
     wxDataObject();
-#ifdef __DARWIN__
-    virtual ~wxDataObject() { }
-#endif
-    
+    virtual ~wxDataObject();
+
     virtual bool IsSupportedFormat( const wxDataFormat& format, Direction dir = Get ) const;
 };
 
diff --git a/include/wx/gtk1/dataobj.h b/include/wx/gtk1/dataobj.h
index 019d5f657f..52ea20c7bd 100644
--- a/include/wx/gtk1/dataobj.h
+++ b/include/wx/gtk1/dataobj.h
@@ -22,10 +22,8 @@ class wxDataObject : public wxDataObjectBase
 {
 public:
     wxDataObject();
-#ifdef __DARWIN__
-    virtual ~wxDataObject() { }
-#endif
-    
+    virtual ~wxDataObject();
+
     virtual bool IsSupportedFormat( const wxDataFormat& format, Direction dir = Get ) const;
 };
 
diff --git a/src/gtk/dataobj.cpp b/src/gtk/dataobj.cpp
index ca8fb4dbd6..2b0f4f43ae 100644
--- a/src/gtk/dataobj.cpp
+++ b/src/gtk/dataobj.cpp
@@ -158,6 +158,11 @@ wxDataObject::wxDataObject()
 {
 }
 
+wxDataObject::~wxDataObject()
+{
+    // dtor is empty but needed for Darwin and AIX -- otherwise it doesn't link
+}
+
 bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir) const
 {
     size_t nFormatCount = GetFormatCount(dir);
diff --git a/src/gtk1/dataobj.cpp b/src/gtk1/dataobj.cpp
index ca8fb4dbd6..2b0f4f43ae 100644
--- a/src/gtk1/dataobj.cpp
+++ b/src/gtk1/dataobj.cpp
@@ -158,6 +158,11 @@ wxDataObject::wxDataObject()
 {
 }
 
+wxDataObject::~wxDataObject()
+{
+    // dtor is empty but needed for Darwin and AIX -- otherwise it doesn't link
+}
+
 bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir) const
 {
     size_t nFormatCount = GetFormatCount(dir);