diff --git a/src/flt_trace.c b/src/flt_trace.c
index 0115129..5d24a41 100644
--- a/src/flt_trace.c
+++ b/src/flt_trace.c
@@ -466,7 +466,7 @@
 
 	if (conf->hexdump) {
 		c_adv(msg->chn, FLT_FWD(filter, msg->chn));
-		trace_hexdump(msg->chn->buf, ret, co_data(msg->chn));
+		trace_hexdump(&msg->chn->buf, ret, co_data(msg->chn));
 		c_rew(msg->chn, FLT_FWD(filter, msg->chn));
 	}
 
@@ -516,7 +516,7 @@
 
 	if (conf->hexdump) {
 		c_adv(chn, FLT_FWD(filter, chn));
-		trace_hexdump(chn->buf, ret, co_data(chn));
+		trace_hexdump(&chn->buf, ret, co_data(chn));
 		c_rew(chn, FLT_FWD(filter, chn));
 	}