diff --git a/include/wx/gtk/dialog.h b/include/wx/gtk/dialog.h
index 62bd45a4cd..6edb8e1df6 100644
--- a/include/wx/gtk/dialog.h
+++ b/include/wx/gtk/dialog.h
@@ -29,7 +29,7 @@ class wxDialog;
 // global data
 //-----------------------------------------------------------------------------
 
-extern const char *wxDialogNameStr;
+extern const wxChar *wxDialogNameStr;
 
 //-----------------------------------------------------------------------------
 // wxDialog
diff --git a/include/wx/gtk/dnd.h b/include/wx/gtk/dnd.h
index e7604927a1..f57083b7db 100644
--- a/include/wx/gtk/dnd.h
+++ b/include/wx/gtk/dnd.h
@@ -225,7 +225,7 @@ public:
   virtual bool OnData( int x, int y );
   
   /* you have to override OnDropFiles to get at the file names */
-  virtual bool OnDropFiles( int x, int y, size_t nFiles, const char * const aszFiles[] ) = 0;
+  virtual bool OnDropFiles( int x, int y, size_t nFiles, const wxChar * const aszFiles[] ) = 0;
 
 };
 
diff --git a/include/wx/gtk1/dialog.h b/include/wx/gtk1/dialog.h
index 62bd45a4cd..6edb8e1df6 100644
--- a/include/wx/gtk1/dialog.h
+++ b/include/wx/gtk1/dialog.h
@@ -29,7 +29,7 @@ class wxDialog;
 // global data
 //-----------------------------------------------------------------------------
 
-extern const char *wxDialogNameStr;
+extern const wxChar *wxDialogNameStr;
 
 //-----------------------------------------------------------------------------
 // wxDialog
diff --git a/include/wx/gtk1/dnd.h b/include/wx/gtk1/dnd.h
index e7604927a1..f57083b7db 100644
--- a/include/wx/gtk1/dnd.h
+++ b/include/wx/gtk1/dnd.h
@@ -225,7 +225,7 @@ public:
   virtual bool OnData( int x, int y );
   
   /* you have to override OnDropFiles to get at the file names */
-  virtual bool OnDropFiles( int x, int y, size_t nFiles, const char * const aszFiles[] ) = 0;
+  virtual bool OnDropFiles( int x, int y, size_t nFiles, const wxChar * const aszFiles[] ) = 0;
 
 };