diff --git a/reactos/dll/win32/actxprxy/actxprxy_activscp.idl b/reactos/dll/win32/actxprxy/actxprxy_activscp.idl
index 3f0fda76cd2..72c558bd751 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_activscp.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_activscp.idl
@@ -20,8 +20,10 @@
 
 #include "activscp.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_comcat.idl b/reactos/dll/win32/actxprxy/actxprxy_comcat.idl
index 548aa0d17a0..ea7d62fb908 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_comcat.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_comcat.idl
@@ -20,8 +20,10 @@
 
 #include "comcat.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_docobj.idl b/reactos/dll/win32/actxprxy/actxprxy_docobj.idl
index 8b2a83f65f2..245cd89f34c 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_docobj.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_docobj.idl
@@ -20,8 +20,10 @@
 
 #include "docobj.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_hlink.idl b/reactos/dll/win32/actxprxy/actxprxy_hlink.idl
index 479e937cbf1..93eab95ca87 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_hlink.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_hlink.idl
@@ -20,8 +20,10 @@
 
 #include "hlink.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_htiframe.idl b/reactos/dll/win32/actxprxy/actxprxy_htiframe.idl
index e3d5f723c91..3b47f2fcacb 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_htiframe.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_htiframe.idl
@@ -20,8 +20,10 @@
 
 #include "htiframe.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_objsafe.idl b/reactos/dll/win32/actxprxy/actxprxy_objsafe.idl
index 771a4d9ccb0..93803bdfa48 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_objsafe.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_objsafe.idl
@@ -20,8 +20,10 @@
 
 #include "objsafe.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_ocmm.idl b/reactos/dll/win32/actxprxy/actxprxy_ocmm.idl
index 75e4788aa54..29c193af0c4 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_ocmm.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_ocmm.idl
@@ -20,8 +20,10 @@
 
 #include "ocmm.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_servprov.idl b/reactos/dll/win32/actxprxy/actxprxy_servprov.idl
index 1388f23e43b..fd9c0908cd7 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_servprov.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_servprov.idl
@@ -1,7 +1,9 @@
 #include "servprov.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_shldisp.idl b/reactos/dll/win32/actxprxy/actxprxy_shldisp.idl
index e5ddb18cfc4..4dafed00da4 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_shldisp.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_shldisp.idl
@@ -20,8 +20,10 @@
 
 #include "shldisp.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_shobjidl.idl b/reactos/dll/win32/actxprxy/actxprxy_shobjidl.idl
index ccff236dca3..d25e96ab020 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_shobjidl.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_shobjidl.idl
@@ -20,8 +20,10 @@
 
 #include "shobjidl.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif
diff --git a/reactos/dll/win32/actxprxy/actxprxy_urlhist.idl b/reactos/dll/win32/actxprxy/actxprxy_urlhist.idl
index f9877527e88..b8a70a00542 100644
--- a/reactos/dll/win32/actxprxy/actxprxy_urlhist.idl
+++ b/reactos/dll/win32/actxprxy/actxprxy_urlhist.idl
@@ -20,8 +20,10 @@
 
 #include "urlhist.idl"
 
+#ifdef __WIDL__
 [
     threading(both),
     uuid(b8da6310-e19b-11d0-933c-00a0c90dcaa9)  /* IActiveScriptStats */
 ]
 coclass PSFactoryBuffer { interface IFactoryBuffer; }
+#endif