diff --git a/3.17/wacom_wac.c b/3.17/wacom_wac.c
index a771d291..7a323b69 100644
--- a/3.17/wacom_wac.c
+++ b/3.17/wacom_wac.c
@@ -2698,6 +2698,10 @@ static void wacom_wac_finger_pre_report(struct hid_device *hdev,
 
 	hid_data->confidence = true;
 
+	hid_data->cc_report = 0;
+	hid_data->cc_index = -1;
+	hid_data->cc_value_index = -1;
+
 	for (i = 0; i < report->maxfield; i++) {
 		struct hid_field *field = report->field[i];
 		int j;