diff --git a/reactos/lib/urlmon/urlmon.spec b/reactos/lib/urlmon/urlmon.spec
index f6ca4356e3c..0a7b1b2b70b 100644
--- a/reactos/lib/urlmon/urlmon.spec
+++ b/reactos/lib/urlmon/urlmon.spec
@@ -33,7 +33,7 @@
 @ stdcall -private DllRegisterServerEx() URLMON_DllRegisterServerEx
 @ stdcall -private DllUnregisterServer() URLMON_DllUnregisterServer
 @ stdcall Extract(long ptr) cabinet.Extract
-@ stub FaultInIEFeature
+@ stdcall FaultInIEFeature(long ptr ptr long)
 @ stub FindMediaType
 @ stub FindMediaTypeClass
 @ stdcall FindMimeFromData(long ptr ptr long ptr long ptr long)
diff --git a/reactos/lib/urlmon/urlmon_main.c b/reactos/lib/urlmon/urlmon_main.c
index 93439f48196..a02ab4881a0 100644
--- a/reactos/lib/urlmon/urlmon_main.c
+++ b/reactos/lib/urlmon/urlmon_main.c
@@ -329,3 +329,15 @@ HRESULT WINAPI IsValidURL(LPBC pBC, LPCWSTR szURL, DWORD dwReserved)
     
     return S_OK;
 }
+
+/**************************************************************************
+ *                 FaultInIEFeature (URLMON.@)
+ *
+ *  Undocumented.  Appears to be used by native shdocvw.dll.
+ */
+HRESULT WINAPI FaultInIEFeature( HWND hwnd, uCLSSPEC * pClassSpec,
+                                 QUERYCONTEXT *pQuery, DWORD flags )
+{
+    FIXME("%p %p %p %08lx\n", hwnd, pClassSpec, pQuery, flags);
+    return E_NOTIMPL;
+}
diff --git a/reactos/w32api/include/wtypes.h b/reactos/w32api/include/wtypes.h
index 0beb1f66119..18a963bf3ac 100644
--- a/reactos/w32api/include/wtypes.h
+++ b/reactos/w32api/include/wtypes.h
@@ -160,6 +160,37 @@ typedef struct tagDEC {
 	};
 } DECIMAL;
 typedef void *HMETAFILEPICT;
+typedef struct tagCSPLATFORM {
+    DWORD dwPlatformId;
+    DWORD dwVersionHi;
+    DWORD dwVersionLo;
+    DWORD dwProcessorArch;
+} CSPLATFORM;
+typedef struct tagQUERYCONTEXT {
+    DWORD dwContext;
+    CSPLATFORM Platform;
+    LCID Locale;
+    DWORD dwVersionHi;
+    DWORD dwVersionLo;
+} QUERYCONTEXT;
+typedef struct {
+    DWORD tyspec;
+    union {
+        CLSID clsid;
+        LPOLESTR pFileExt;
+        LPOLESTR pMimeType;
+        LPOLESTR pProgId;
+        LPOLESTR pFileName;
+        struct {
+            LPOLESTR pPackageName;
+            GUID PolicyId;
+        } ByName;
+        struct {
+            GUID ObjectId;
+            GUID PolicyId;
+        } ByObjectId;
+    } tagged_union;
+} uCLSSPEC;
 #ifdef __cplusplus
 }
 #endif