diff --git a/py4DSTEM/process/wholepatternfit/wp_models.py b/py4DSTEM/process/wholepatternfit/wp_models.py
index 3d53c1743..c0907a11e 100644
--- a/py4DSTEM/process/wholepatternfit/wp_models.py
+++ b/py4DSTEM/process/wholepatternfit/wp_models.py
@@ -1117,7 +1117,7 @@ def __init__(
         name="Complex Overlapped Disk Lattice",
         verbose=False,
     ):
-        return NotImplementedError(
+        raise NotImplementedError(
             "This model type has not been updated for use with the new architecture."
         )