diff --git a/db/sqlite3/src/sqlite3file.h b/db/sqlite3/src/sqlite3file.h
index 1a6f619da8f6..14c1de741996 100644
--- a/db/sqlite3/src/sqlite3file.h
+++ b/db/sqlite3/src/sqlite3file.h
@@ -203,11 +203,4 @@ struct sqlite3OsVtbl {
   extern struct sqlite3OsVtbl sqlite3Os;
 #endif /* _SQLITE_OS_C_ */
 
-
-/* FROM os.h
-** ---------
-** This additional API routine is available with redefinable I/O
-*/
-struct sqlite3OsVtbl *sqlite3_os_switch(void);
-
 } // extern "C"
diff --git a/storage/src/mozStorageAsyncIO.cpp b/storage/src/mozStorageAsyncIO.cpp
index 6ad959c35319..967d02e984d5 100644
--- a/storage/src/mozStorageAsyncIO.cpp
+++ b/storage/src/mozStorageAsyncIO.cpp
@@ -503,7 +503,7 @@ NS_IMPL_THREADSAFE_ISUPPORTS1(AsyncWriteThread, nsIRunnable)
 nsresult
 mozStorageService::InitStorageAsyncIO()
 {
-  sqlite3OsVtbl* vtable = sqlite3_os_switch();
+  sqlite3OsVtbl* vtable = &sqlite3Os;
 
   sqliteOrigOpenReadWrite = vtable->xOpenReadWrite;
   sqliteOrigOpenReadOnly = vtable->xOpenReadOnly;