diff --git a/src/stkutil.h b/src/stkutil.h
index bc795d4b..f2e86681 100644
--- a/src/stkutil.h
+++ b/src/stkutil.h
@@ -1477,14 +1477,6 @@ struct stk_channel {
 	enum stk_channel_status status;
 };
 
-struct stk_channel_data {
-	struct stk_common_byte_array data;
-	union {
-		unsigned short rx_remaining;
-		unsigned short tx_avail;
-	};
-};
-
 struct stk_response_get_inkey {
 	struct stk_answer_text text;
 	struct stk_duration duration;