diff --git a/crates/tests/const_ptrs/Cargo.toml b/crates/tests/const_ptrs/Cargo.toml
index 4f7bd9b3a9..0c228fbf3f 100644
--- a/crates/tests/const_ptrs/Cargo.toml
+++ b/crates/tests/const_ptrs/Cargo.toml
@@ -9,6 +9,7 @@ path = "../../libs/windows"
 features = [
     "Win32_Foundation",
     "Win32_System_Com_StructuredStorage",
+    "Win32_System_Variant",
     "Win32_UI_Shell_PropertiesSystem",
     "Win32_UI_Shell",
 ]