diff --git a/src/mux_quic.c b/src/mux_quic.c
index 1210ed286..03a7b2938 100644
--- a/src/mux_quic.c
+++ b/src/mux_quic.c
@@ -3619,7 +3619,7 @@ void qcc_show_quic(struct qcc *qcc)
 		if (!quic_stream_is_uni(qcs->id) || !quic_stream_is_remote(qcc, qcs->id))
 			chunk_appendf(&trash, " txoff=%llu(%llu) msd=%llu",
 			              (ullong)qcs->tx.fc.off_real,
-			              (ullong)qcs->tx.fc.off_soft - (ullong)qcs->tx.fc.off_soft,
+			              (ullong)qcs->tx.fc.off_soft - (ullong)qcs->tx.fc.off_real,
 			              (ullong)qcs->tx.fc.limit);
 		chunk_appendf(&trash, "\n");
 		node = eb64_next(node);