diff --git a/mantidimaging/core/utility/data_containers.py b/mantidimaging/core/utility/data_containers.py
index 73767598296..c766fa94cf0 100644
--- a/mantidimaging/core/utility/data_containers.py
+++ b/mantidimaging/core/utility/data_containers.py
@@ -14,8 +14,6 @@
 from dataclasses import dataclass
 from typing import Any, NamedTuple, TYPE_CHECKING
 
-import numpy as np
-
 if TYPE_CHECKING:
     import numpy