diff --git a/src/libcharon/sa/child_sa.c b/src/libcharon/sa/child_sa.c
index 2c77ee2c6d..a29531ccbc 100644
--- a/src/libcharon/sa/child_sa.c
+++ b/src/libcharon/sa/child_sa.c
@@ -276,7 +276,7 @@ struct private_child_sa_t {
 	uint64_t my_usepackets;
 
 	/**
-	 * last number of outbound bytes
+	 * last number of outbound packets
 	 */
 	uint64_t other_usepackets;
 };