diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index 17c2578bbc58..69801ace0496 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -419,7 +419,7 @@ static void cros_ec_lpc_acpi_notify(acpi_handle device, u32 value, void *data)
 		return;
 	}
 
-	if (ec_dev->mkbp_event_supported)
+	if (value == ACPI_NOTIFY_CROS_EC_MKBP && ec_dev->mkbp_event_supported)
 		do {
 			ret = cros_ec_get_next_event(ec_dev, NULL,
 						     &ec_has_more_events);
diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
index 701389c16fa7..3ec24f445c29 100644
--- a/include/linux/platform_data/cros_ec_proto.h
+++ b/include/linux/platform_data/cros_ec_proto.h
@@ -41,6 +41,11 @@
 #define EC_MAX_REQUEST_OVERHEAD		1
 #define EC_MAX_RESPONSE_OVERHEAD	32
 
+/*
+ * ACPI notify value for MKBP host event.
+ */
+#define ACPI_NOTIFY_CROS_EC_MKBP 0x80
+
 /*
  * EC panic is not covered by the standard (0-F) ACPI notify values.
  * Arbitrarily choosing B0 to notify ec panic, which is in the 84-BF