diff --git a/gnu/packages/aux-files/guile-launcher.c b/gnu/packages/aux-files/guile-launcher.c
index ad0094bff5..6a59905a28 100644
--- a/gnu/packages/aux-files/guile-launcher.c
+++ b/gnu/packages/aux-files/guile-launcher.c
@@ -73,6 +73,15 @@ main (int argc, char **argv)
        which is always preferable over the C locale.  */
     setlocale (LC_ALL, "en_US.utf8");
 
+#if defined __GNU__
+  /* XXX: On 32-bit GNU/Hurd (i586-gnu), libgc emits "Repeated allocation"
+     warnings that are annoying and interfere with communications between
+     'guix-daemon' and 'guix authenticate':
+     <https://issues.guix.gnu.org/73181>.  Silence them.  */
+  static void no_warnings (char *message, GC_word arg) { };
+  GC_set_warn_proc (no_warnings);
+#endif
+
   const char *str;
   str = getenv ("GUILE_LOAD_PATH");
   load_path = str != NULL ? strdup (str) : NULL;