diff --git a/security/sandbox/chromium/sandbox/win/src/registry_policy.cc b/security/sandbox/chromium/sandbox/win/src/registry_policy.cc
index d056c9c5940b..ec6638081425 100644
--- a/security/sandbox/chromium/sandbox/win/src/registry_policy.cc
+++ b/security/sandbox/chromium/sandbox/win/src/registry_policy.cc
@@ -20,8 +20,7 @@ namespace {
 
 static const uint32_t kAllowedRegFlags =
     KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS | KEY_NOTIFY | KEY_READ |
-    GENERIC_READ | GENERIC_EXECUTE | READ_CONTROL | KEY_WOW64_64KEY |
-    KEY_WOW64_32KEY;
+    GENERIC_READ | GENERIC_EXECUTE | READ_CONTROL;
 
 // Opens the key referenced by |obj_attributes| with |access| and
 // checks what permission was given. Remove the WRITE flags and update