1 files changed, 3 insertions, 2 deletions
diff --git a/src/basic/af-list.c b/src/basic/af-list.c
index 866a1d4317..abad221d58 100644
--- a/src/basic/af-list.c
+++ b/src/basic/af-list.c
@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 
+#include <errno.h>
 #include <string.h>
 #include <sys/socket.h>
 
@@ -16,7 +17,7 @@ const char *af_to_name(int id) {
         if (id <= 0)
                 return NULL;
 
-        if (id >= (int) ELEMENTSOF(af_names))
+        if ((size_t) id >= ELEMENTSOF(af_names))
                 return NULL;
 
         return af_names[id];
@@ -29,7 +30,7 @@ int af_from_name(const char *name) {
 
         sc = lookup_af(name, strlen(name));
         if (!sc)
-                return AF_UNSPEC;
+                return -EINVAL;
 
         return sc->id;
 }