diff --git a/mozilla/xpcom/io/nsLocalFileOS2.cpp b/mozilla/xpcom/io/nsLocalFileOS2.cpp
index 8b8072bde07..2af6358db87 100644
--- a/mozilla/xpcom/io/nsLocalFileOS2.cpp
+++ b/mozilla/xpcom/io/nsLocalFileOS2.cpp
@@ -608,7 +608,11 @@ nsLocalFile::nsLocalFileConstructor(nsISupports* outer, const nsIID& aIID, void*
 // nsLocalFile::nsISupports
 //-----------------------------------------------------------------------------
 
-NS_IMPL_THREADSAFE_ISUPPORTS3(nsLocalFile, nsILocalFile, nsIFile, nsILocalFileOS2)
+NS_IMPL_THREADSAFE_ISUPPORTS4(nsLocalFile,
+                              nsILocalFile,
+                              nsIFile,
+                              nsILocalFileOS2,
+                              nsIHashable)
 
 
 //-----------------------------------------------------------------------------
diff --git a/mozilla/xpcom/io/nsLocalFileOSX.cpp b/mozilla/xpcom/io/nsLocalFileOSX.cpp
index 51429185cb7..231ec70c6e9 100644
--- a/mozilla/xpcom/io/nsLocalFileOSX.cpp
+++ b/mozilla/xpcom/io/nsLocalFileOSX.cpp
@@ -334,10 +334,11 @@ nsLocalFile::~nsLocalFile()
 #pragma mark -
 #pragma mark [nsISupports]
 
-NS_IMPL_THREADSAFE_ISUPPORTS3(nsLocalFile,
+NS_IMPL_THREADSAFE_ISUPPORTS4(nsLocalFile,
                               nsILocalFileMac,
                               nsILocalFile,
-                              nsIFile)
+                              nsIFile,
+                              nsIHashable)
                               
 NS_METHOD nsLocalFile::nsLocalFileConstructor(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr)
 {
diff --git a/mozilla/xpcom/io/nsLocalFileUnix.cpp b/mozilla/xpcom/io/nsLocalFileUnix.cpp
index eaac32c573b..3191a4e6427 100644
--- a/mozilla/xpcom/io/nsLocalFileUnix.cpp
+++ b/mozilla/xpcom/io/nsLocalFileUnix.cpp
@@ -252,9 +252,10 @@ nsLocalFile::nsLocalFile(const nsLocalFile& other)
 {
 }
 
-NS_IMPL_THREADSAFE_ISUPPORTS2(nsLocalFile,
+NS_IMPL_THREADSAFE_ISUPPORTS3(nsLocalFile,
                               nsIFile,
-                              nsILocalFile)
+                              nsILocalFile,
+                              nsIHashable)
 
 nsresult
 nsLocalFile::nsLocalFileConstructor(nsISupports *outer, 
diff --git a/mozilla/xpcom/io/nsLocalFileWin.cpp b/mozilla/xpcom/io/nsLocalFileWin.cpp
index 81052a4bf64..840ba85b4be 100644
--- a/mozilla/xpcom/io/nsLocalFileWin.cpp
+++ b/mozilla/xpcom/io/nsLocalFileWin.cpp
@@ -479,7 +479,11 @@ nsLocalFile::nsLocalFileConstructor(nsISupports* outer, const nsIID& aIID, void*
 // nsLocalFile::nsISupports
 //-----------------------------------------------------------------------------
 
-NS_IMPL_THREADSAFE_ISUPPORTS3(nsLocalFile, nsILocalFile, nsIFile, nsILocalFileWin)
+NS_IMPL_THREADSAFE_ISUPPORTS4(nsLocalFile,
+                              nsILocalFile,
+                              nsIFile,
+                              nsILocalFileWin,
+                              nsIHashable)
 
 
 //-----------------------------------------------------------------------------