diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 2e77ac458bab..657fd8c49597 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -224,6 +224,7 @@ struct hotkey_function_type_aa {
 #define ACER_CAP_BLUETOOTH		BIT(2)
 #define ACER_CAP_BRIGHTNESS		BIT(3)
 #define ACER_CAP_THREEG			BIT(4)
+#define ACER_CAP_SET_FUNCTION_MODE	BIT(5)
 
 /*
  * Interface type flags
@@ -2261,10 +2262,14 @@ static int __init acer_wmi_init(void)
 	if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
 		interface->capability &= ~ACER_CAP_BRIGHTNESS;
 
+	if (wmi_has_guid(WMID_GUID3))
+		interface->capability |= ACER_CAP_SET_FUNCTION_MODE;
+
 	if (force_caps != -1)
 		interface->capability = force_caps;
 
-	if (wmi_has_guid(WMID_GUID3)) {
+	if (wmi_has_guid(WMID_GUID3) &&
+	    (interface->capability & ACER_CAP_SET_FUNCTION_MODE)) {
 		if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
 			pr_warn("Cannot enable RF Button Driver\n");