--- asterisk-15.5.0/main/rtp_engine.c	2018-07-12 18:36:50.000000000 +0200
+++ asterisk-15.5.0_patched/main/rtp_engine.c	2018-09-12 10:49:01.277554100 +0200
@@ -1471,9 +1471,7 @@
 	ast_rwlock_unlock(&codecs->codecs_lock);
 
 	if (!type && payload <= AST_RTP_PT_LAST_STATIC) {
-		ast_rwlock_rdlock(&static_RTP_PT_lock);
-		type = ao2_bump(static_RTP_PT[payload]);
-		ast_rwlock_unlock(&static_RTP_PT_lock);
+	        ast_verbose("Payload (%d) not found in codec list, ignore it\n", payload);
 	}
 
 	return type;