diff --git a/xpcom/build/dlldeps.cpp b/xpcom/build/dlldeps.cpp
index c22a783b223e..45900e1d9ac5 100644
--- a/xpcom/build/dlldeps.cpp
+++ b/xpcom/build/dlldeps.cpp
@@ -91,7 +91,10 @@
 #include "nsHashPropertyBag.h"
 #include "nsStringAPI.h"
 #include "nsStringBuffer.h"
+
+#ifndef WINCE
 #include "nsWindowsRegKey.h"
+#endif
 
 void XXXNeverCalled()
 {
@@ -241,5 +244,7 @@ void XXXNeverCalled()
       b.ToString(0, y);
     }
 
+#ifndef WINCE
     NS_NewWindowsRegKey(nsnull);
+#endif
 }
diff --git a/xpcom/build/nsXPComInit.cpp b/xpcom/build/nsXPComInit.cpp
index 5225a16e2be2..8fe7d391a7c3 100644
--- a/xpcom/build/nsXPComInit.cpp
+++ b/xpcom/build/nsXPComInit.cpp
@@ -114,7 +114,7 @@
 
 #include "SpecialSystemDirectory.h"
 
-#ifdef XP_WIN
+#if defined(XP_WIN) && !defined(WINCE)
 #include "nsWindowsRegKey.h"
 #endif
 
@@ -390,7 +390,7 @@ static const nsModuleComponentInfo components[] = {
 #define NS_HASH_PROPERTY_BAG_CLASSNAME "Hashtable Property Bag"
     COMPONENT(HASH_PROPERTY_BAG, nsHashPropertyBagConstructor),
 
-#ifdef XP_WIN
+#if defined(XP_WIN) && !defined(WINCE)
     COMPONENT(WINDOWSREGKEY, nsWindowsRegKeyConstructor),
 #endif
 };