diff --git a/src/mainboard/google/skyrim/variants/frostflow/include/variant/ec.h b/src/mainboard/google/skyrim/variants/frostflow/include/variant/ec.h
index 9e61a440cf..dac67ca295 100644
--- a/src/mainboard/google/skyrim/variants/frostflow/include/variant/ec.h
+++ b/src/mainboard/google/skyrim/variants/frostflow/include/variant/ec.h
@@ -1,3 +1,13 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 
+#ifndef __VARIANT_EC_H__
+#define __VARIANT_EC_H__
+
 #include <baseboard/ec.h>
+
+/* Enable Tablet switch for Windows drivers */
+#if !CONFIG(CHROMEOS)
+#define EC_ENABLE_TBMC_DEVICE
+#endif
+
+#endif