diff --git a/tests/kdc/krb5-pkinit.conf.in b/tests/kdc/krb5-pkinit.conf.in
index aebd78fd4..71b73284e 100644
--- a/tests/kdc/krb5-pkinit.conf.in
+++ b/tests/kdc/krb5-pkinit.conf.in
@@ -3,6 +3,7 @@
 [libdefaults]
 	default_realm = TEST.H5L.SE
 	no-addresses = TRUE
+	allow_weak_crypto = TRUE
 
 [appdefaults]
 	pkinit_anchors = FILE:@objdir@/ca.crt