diff --git a/bin/tests/system/isctest/vars/features.py b/bin/tests/system/isctest/vars/features.py
index 40982802af..5b2bf39367 100644
--- a/bin/tests/system/isctest/vars/features.py
+++ b/bin/tests/system/isctest/vars/features.py
@@ -15,6 +15,7 @@ import subprocess
 from .basic import BASIC_VARS
 
 FEATURES = {
+    "DEVELOPER": "--enable-developer",
     "DNSTAP": "--enable-dnstap",
     "EXTENDED_DS_DIGEST": "--extended-ds-digest",
     "FIPS_DH": "--have-fips-dh",