diff --git a/mantidimaging/gui/dialogs/cor_inspection/model.py b/mantidimaging/gui/dialogs/cor_inspection/model.py
index 9d4d165ae62..85320645bde 100644
--- a/mantidimaging/gui/dialogs/cor_inspection/model.py
+++ b/mantidimaging/gui/dialogs/cor_inspection/model.py
@@ -3,10 +3,8 @@
 from __future__ import annotations
 from dataclasses import replace
 from logging import getLogger
-from typing import TYPE_CHECKING
 
-if TYPE_CHECKING:
-    import numpy as np
+import numpy as np
 
 from mantidimaging.core.data import ImageStack
 from mantidimaging.core.reconstruct import get_reconstructor_for