diff --git a/t/02-registration.t b/t/02-registration.t
index 83b981cc3a64dc03befb51d4acdd6b0c442d8aa7..cd2201ad9b959baa269aee25530f25b9c03dcee7 100644
--- a/t/02-registration.t
+++ b/t/02-registration.t
@@ -43,6 +43,7 @@ my $csrf_token
 $t->post_ok(
 	'/register' => form => {
 		csrf_token => $csrf_token,
+		dt         => 1,
 		user       => 'someone',
 		email      => 'foo@example.org',
 		password   => 'foofoofoo',
@@ -51,10 +52,23 @@ $t->post_ok(
 );
 $t->status_is(200)->content_like(qr{Verifizierungslink});
 
+# Failed registration (CSRF)
+$t->post_ok(
+	'/register' => form => {
+		csrf_token => $csrf_token,
+		user       => 'noone',
+		email      => 'foo2@example.org',
+		password   => 'foofoofoo',
+		password2  => 'foofoofoo',
+	}
+);
+$t->status_is(200)->content_like(qr{CSRF});
+
 # Failed registration (user name not available)
 $t->post_ok(
 	'/register' => form => {
 		csrf_token => $csrf_token,
+		dt         => 1,
 		user       => 'someone',
 		email      => 'foo@example.org',
 		password   => 'foofoofoo',
diff --git a/t/11-journey-stats.t b/t/11-journey-stats.t
index 808a15c20f6e73854eb0d76102710236120f5e98..e50c5b69d7d1b411589109337e818ae7882da971 100644
--- a/t/11-journey-stats.t
+++ b/t/11-journey-stats.t
@@ -43,6 +43,7 @@ my $csrf_token
 $t->post_ok(
 	'/register' => form => {
 		csrf_token => $csrf_token,
+		dt         => 1,
 		user       => 'someone',
 		email      => 'foo@example.org',
 		password   => 'foofoofoo',
diff --git a/t/12-journey-edit.t b/t/12-journey-edit.t
index 941ff9511b41c2334380e7a4c4e16056d2a54de0..1f00b85b0f50a5d8f6f2be864792416c209e74fc 100644
--- a/t/12-journey-edit.t
+++ b/t/12-journey-edit.t
@@ -45,6 +45,7 @@ my $csrf_token
 $t->post_ok(
 	'/register' => form => {
 		csrf_token => $csrf_token,
+		dt         => 1,
 		user       => 'someone',
 		email      => 'foo@example.org',
 		password   => 'foofoofoo',
diff --git a/t/r-negative-delay.t b/t/r-negative-delay.t
index 2b6f271510daa24a32e9c678e0dd471554e10220..7abe1bcaa4a5c75ea488c300c305c828f3cc30d0 100644
--- a/t/r-negative-delay.t
+++ b/t/r-negative-delay.t
@@ -44,6 +44,7 @@ my $csrf_token
 $t->post_ok(
 	'/register' => form => {
 		csrf_token => $csrf_token,
+		dt         => 1,
 		user       => 'someone',
 		email      => 'foo@example.org',
 		password   => 'foofoofoo',