diff --git a/smoketest/scripts/cli/test_configd_inspect.py b/smoketest/scripts/cli/test_configd_inspect.py
index af46c6148e..c2c5990bbf 100755
--- a/smoketest/scripts/cli/test_configd_inspect.py
+++ b/smoketest/scripts/cli/test_configd_inspect.py
@@ -58,8 +58,7 @@ def test_signatures(self):
             m = import_script(s)
             for i in f_list:
                 f = getattr(m, i, None)
-                if not f:
-                    continue
+                self.assertIsNotNone(f, f"'{s}': missing function '{i}'")
                 sig = signature(f)
                 par = sig.parameters
                 l = len(par)
diff --git a/src/conf_mode/interfaces_wireguard.py b/src/conf_mode/interfaces_wireguard.py
index 0e0b77877c..d7a638b518 100755
--- a/src/conf_mode/interfaces_wireguard.py
+++ b/src/conf_mode/interfaces_wireguard.py
@@ -103,6 +103,9 @@ def verify(wireguard):
 
         public_keys.append(peer['public_key'])
 
+def generate(wireguard):
+    return None
+
 def apply(wireguard):
     if 'rebuild_required' in wireguard or 'deleted' in wireguard:
         wg = WireGuardIf(**wireguard)
diff --git a/src/conf_mode/system_acceleration.py b/src/conf_mode/system_acceleration.py
index e4b2486758..d2cf44ff09 100755
--- a/src/conf_mode/system_acceleration.py
+++ b/src/conf_mode/system_acceleration.py
@@ -79,6 +79,9 @@ def verify(qat):
         if not data:
             raise ConfigError('No QAT acceleration device found')
 
+def generate(qat):
+    return
+
 def apply(qat):
     # Shutdown VPN service which can use QAT
     if 'ipsec' in qat: