diff --git a/reactos/ReactOS-i386.rbuild b/reactos/ReactOS-i386.rbuild
index ae727575ce1..7b82e8a15a5 100644
--- a/reactos/ReactOS-i386.rbuild
+++ b/reactos/ReactOS-i386.rbuild
@@ -14,6 +14,8 @@
 	<define name="__i386__" />
 	<define name="TARGET_i386" host="true" />
 
+	<define name="USE_COMPILER_EXCEPTIONS" />
+
 	<property name="NTOSKRNL_SHARED" value="-file-alignment=0x1000 -section-alignment=0x1000 -shared"/>
 
 	<if property="OPTIMIZE" value="1">
diff --git a/reactos/include/psdk/wtypes.idl b/reactos/include/psdk/wtypes.idl
index 8378012fd0e..ff9c5e418ff 100644
--- a/reactos/include/psdk/wtypes.idl
+++ b/reactos/include/psdk/wtypes.idl
@@ -21,6 +21,10 @@
 import "basetsd.h";
 import "guiddef.h";
 
+cpp_quote("#ifndef __wtypes_h__")
+cpp_quote("#define __wtypes_h__")
+cpp_quote("#endif")
+
 [
   uuid(D3980A60-910C-1068-9341-00DD010F2F1C),
   version(0.1),
@@ -789,7 +793,7 @@ typedef struct tagQUERYCONTEXT
     DWORD dwVersionLo;
 } QUERYCONTEXT;
 
-typedef [v1_enum] enum tagTYSPEC 
+typedef [v1_enum] enum tagTYSPEC
 {
     TYSPEC_CLSID,
     TYSPEC_FILEEXT,
diff --git a/reactos/include/psdk/xmldom.idl b/reactos/include/psdk/xmldom.idl
index 31c5e6628a1..89263c4b75c 100644
--- a/reactos/include/psdk/xmldom.idl
+++ b/reactos/include/psdk/xmldom.idl
@@ -21,6 +21,10 @@
 
 import "ocidl.idl";
 
+cpp_quote("#ifndef __xmldom_h__")
+cpp_quote("#define __xmldom_h__")
+cpp_quote("#endif")
+
 interface IXMLDOMImplementation;
 interface IXMLDOMNode;
 interface IXMLDOMDocumentFragment;