Register Shell Drag and Drop Helper.

diff --git a/include/shlguid.h b/include/shlguid.h
index a2efab6..78f4dea 100644
--- a/include/shlguid.h
+++ b/include/shlguid.h
@@ -105,7 +105,7 @@
 
 DEFINE_GUID(IID_IQueryAssociations, 0xc46ca590, 0x3c3f, 0x11d2, 0xbe, 0xe6, 0x00, 0x00, 0xf8, 0x05, 0xca, 0x57);
 
-DEFINE_GUID(CLSID_DragDropHelper, 0x4657278a, 0x411b, 0x11d2, 0x83, 0x9a, 0x0, 0xc0, 0x4f, 0xd9, 0x18, 0xd0);
+DEFINE_GUID(CLSID_DragDropHelper, 0x4657278a, 0x411b, 0x11d2, 0x83, 0x9a, 0x00, 0xc0, 0x4f, 0xd9, 0x18, 0xd0);
 
 DEFINE_GUID(CLSID_AutoComplete, 0x00bb2763, 0x6a77, 0x11d0, 0xa5, 0x35, 0x00, 0xc0, 0x4f, 0xd7, 0xd0, 0x62);