--- clamav-0.103.0.orig/clamdscan/proto.c	2020-09-13 02:27:09.000000000 +0200
+++ clamav-0.103.0/clamdscan/proto.c	2021-01-28 04:40:12.604606645 +0100
@@ -39,6 +39,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <sys/types.h>
+#include <sys/un.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <sys/types.h>