diff --git a/x/Cargo.toml b/x/Cargo.toml
index b6fd9dd..5806b45 100644
--- a/x/Cargo.toml
+++ b/x/Cargo.toml
@@ -12,6 +12,7 @@ pe = ["sub_pe"]
 
 xpat = ["core", "sub_xpat", "macros"]
 winuser = ["sub_winu", "pe", "sub_pe/windows"]
+winkrnl = ["pe", "sub_pe/windows"]
 
 [dependencies]
 sub_core = { workspace = true, optional = true }