diff --git a/tests/kdc/krb5.conf.in b/tests/kdc/krb5.conf.in
index f1bb46ebe..9203e41d2 100644
--- a/tests/kdc/krb5.conf.in
+++ b/tests/kdc/krb5.conf.in
@@ -16,7 +16,7 @@
 	}
 
 [kdc]
-	enable-digest = true
+	digest_enable = true
 
 	pkinit_enable = true
 	pkinit_identity = FILE:@srcdir@/../../lib/hx509/data/kdc.crt,@srcdir@/../../lib/hx509/data/kdc.key