diff --git a/src/basic/arphrd-to-name.awk b/src/basic/arphrd-to-name.awk
index 4600dbf28e..db1c739abb 100644
--- a/src/basic/arphrd-to-name.awk
+++ b/src/basic/arphrd-to-name.awk
@@ -2,7 +2,7 @@ BEGIN{
         print "const char *arphrd_to_name(int id) {"
         print "        switch(id) {"
 }
-!/CISCO|NETROM/ {
+!/^HDLC$/ {
         printf "        case ARPHRD_%s: return \"%s\";\n", $1, $1
 }
 END{
diff --git a/src/test/test-arphrd-list.c b/src/test/test-arphrd-list.c
index 3010ca6b45..d7352b54e0 100644
--- a/src/test/test-arphrd-list.c
+++ b/src/test/test-arphrd-list.c
@@ -22,7 +22,6 @@ int main(int argc, const char *argv[]) {
         }
 
         assert_se(arphrd_to_name(ARPHRD_VOID + 1) == NULL);
-        assert_se(arphrd_to_name(0) == NULL);
         assert_se(arphrd_from_name("huddlduddl") == -EINVAL);
         assert_se(arphrd_from_name("") == -EINVAL);