diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index e7b670ab2e4..1483c762280 100644
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -776,7 +776,7 @@ int read_full_file_full(
 
                 /* Seeking is not supported on AF_UNIX sockets */
                 if (offset != UINT64_MAX)
-                        return -ESPIPE;
+                        return -ENXIO;
 
                 if (dir_fd == AT_FDCWD)
                         r = sockaddr_un_set_path(&sa.un, filename);