diff --git a/src/anomalib/utils/visualization/image.py b/src/anomalib/utils/visualization/image.py
index 3f79283a14..2947af3938 100644
--- a/src/anomalib/utils/visualization/image.py
+++ b/src/anomalib/utils/visualization/image.py
@@ -263,6 +263,11 @@ def generate(self) -> np.ndarray:
         """
         num_cols = len(self.images)
         figure_size = (num_cols * 5, 5)
+
+        # Use Agg backend. This method fails when using backend like MacOSX which might be automatically selected
+        # The dimension of image returned by tostring_rgb() does not match the dimension of the canvas
+        matplotlib.use("Agg")
+
         self.figure, self.axis = plt.subplots(1, num_cols, figsize=figure_size)
         self.figure.subplots_adjust(right=0.9)