diff --git a/g10/gpg.c b/g10/gpg.c
index 84706ca6b..74946b0dd 100644
--- a/g10/gpg.c
+++ b/g10/gpg.c
@@ -2573,6 +2573,7 @@ main (int argc, char **argv)
 
     /* Set default options which require that malloc stuff is ready.  */
     additional_weak_digest ("MD5");
+    additional_weak_digest ("SHA1");
     parse_auto_key_locate (DEFAULT_AKL_LIST);
 
     argc = orig_argc;
diff --git a/g10/gpgv.c b/g10/gpgv.c
index ceded4af9..277d3c8ca 100644
--- a/g10/gpgv.c
+++ b/g10/gpgv.c
@@ -205,6 +205,7 @@ main( int argc, char **argv )
   dotlock_disable ();
   gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
   additional_weak_digest("MD5");
+  additional_weak_digest("SHA1");
   gnupg_initialize_compliance (GNUPG_MODULE_NAME_GPG);
 
   pargs.argc = &argc;