diff --git a/g10/ChangeLog b/g10/ChangeLog
index dfee13c28..4d977b443 100644
--- a/g10/ChangeLog
+++ b/g10/ChangeLog
@@ -1,3 +1,7 @@
+2008-12-11  Werner Koch  <wk@g10code.com>
+
+	* sig-check.c (check_revocation_keys): Close message digest.
+
 2008-12-09  Werner Koch  <wk@g10code.com>
 
 	* keygen.c (proc_parameter_file): Check that key and subkey usages
diff --git a/g10/sig-check.c b/g10/sig-check.c
index bf8945e8b..834bf98db 100644
--- a/g10/sig-check.c
+++ b/g10/sig-check.c
@@ -427,6 +427,7 @@ check_revocation_keys(PKT_public_key *pk,PKT_signature *sig)
               hash_public_key(md,pk);
               rc=signature_check(sig,md);
 	      cache_sig_result(sig,rc);
+              md_close (md);
 	      break;
 	    }
 	}