diff --git a/dlls/ole32/compobj_private.h b/dlls/ole32/compobj_private.h
index f2a83c896a4..624909c2274 100644
--- a/dlls/ole32/compobj_private.h
+++ b/dlls/ole32/compobj_private.h
@@ -42,7 +42,6 @@ struct apartment;
 typedef struct apartment APARTMENT;
 
 DEFINE_OLEGUID( CLSID_DfMarshal, 0x0000030b, 0, 0 );
-DEFINE_OLEGUID( CLSID_PSFactoryBuffer, 0x00000320, 0, 0 );
 
 /* signal to stub manager that this is a rem unknown object */
 #define MSHLFLAGSP_REMUNKNOWN   0x80000000
diff --git a/dlls/ole32/dcom.idl b/dlls/ole32/dcom.idl
index a1c0dcd5689..4517b46d871 100644
--- a/dlls/ole32/dcom.idl
+++ b/dlls/ole32/dcom.idl
@@ -21,6 +21,12 @@
 
 import "unknwn.idl";
 
+[
+    threading(both),
+    uuid(00000320-0000-0000-c000-000000000046)
+]
+coclass PSFactoryBuffer { interface IFactoryBuffer; }
+
 [
   uuid(99fcfe60-5260-101b-bbcb-00aa0021347a),
   pointer_default(unique)
diff --git a/dlls/ole32/ole32_objidl.idl b/dlls/ole32/ole32_objidl.idl
index bbb91a4a661..057a3e3681d 100644
--- a/dlls/ole32/ole32_objidl.idl
+++ b/dlls/ole32/ole32_objidl.idl
@@ -96,6 +96,12 @@ coclass Picture_Dib { interface IPicture; }
 ]
 coclass ClassMoniker { interface IMoniker; }
 
+[
+    threading(both),
+    uuid(00000320-0000-0000-c000-000000000046)
+]
+coclass PSFactoryBuffer { interface IFactoryBuffer; }
+
 [
     threading(apartment),
     uuid(00000323-0000-0000-c000-000000000046)
diff --git a/dlls/ole32/ole32_oleidl.idl b/dlls/ole32/ole32_oleidl.idl
index 93cf079e1e1..a3bd8810129 100644
--- a/dlls/ole32/ole32_oleidl.idl
+++ b/dlls/ole32/ole32_oleidl.idl
@@ -17,3 +17,9 @@
  */
 
 #include "oleidl.idl"
+
+[
+    threading(both),
+    uuid(00000320-0000-0000-c000-000000000046)
+]
+coclass PSFactoryBuffer { interface IFactoryBuffer; }
diff --git a/dlls/ole32/ole32_unknwn.idl b/dlls/ole32/ole32_unknwn.idl
index a63f156bb41..9be195f4d76 100644
--- a/dlls/ole32/ole32_unknwn.idl
+++ b/dlls/ole32/ole32_unknwn.idl
@@ -23,3 +23,9 @@
 cpp_quote("#if 0    /* oleaut32_unknwn.idl hack */")
 #include "unknwn.idl"
 cpp_quote("#endif   /* oleaut32_unknwn.idl hack */")
+
+[
+    threading(both),
+    uuid(00000320-0000-0000-c000-000000000046)
+]
+coclass PSFactoryBuffer { interface IFactoryBuffer; }