diff --git a/res/res_rtp_asterisk.c b/res/res_rtp_asterisk.c
index 17041fec7c5e2763f34beb62e804a73ae2cc967d..16c3be01acb9401bacac6dbcb846fc9275d45134 100644
--- a/res/res_rtp_asterisk.c
+++ b/res/res_rtp_asterisk.c
@@ -7560,7 +7560,9 @@ struct rtp_drop_packets_data {
 	struct ast_sockaddr addr;
 	/* The optional port from which to drop packets from. */
 	unsigned int port;
-} drop_packets_data;
+};
+
+static struct rtp_drop_packets_data drop_packets_data;
 
 static void drop_packets_data_update(struct timeval tv)
 {