diff --git a/deeptrack/scatterers.py b/deeptrack/scatterers.py
index a899a253a..9cc711f21 100644
--- a/deeptrack/scatterers.py
+++ b/deeptrack/scatterers.py
@@ -747,7 +747,7 @@ def get(
                 -mask.shape[1] // 2 : mask.shape[1] // 2,
             ]
             mask = np.exp(-0.5 * (x**2 + y**2) / ((sigma) ** 2))
-
+            mask = image.maybe_cupy(mask)
             arr = arr * mask
 
         fourier_field = np.fft.fft2(arr)
diff --git a/deeptrack/test/test_scatterers.py b/deeptrack/test/test_scatterers.py
index 6d09c278b..c830f9ff9 100644
--- a/deeptrack/test/test_scatterers.py
+++ b/deeptrack/test/test_scatterers.py
@@ -294,6 +294,28 @@ def test_MieSphere(self):
 
         imaged_scatterer_1.update().resolve()
 
+    def test_MieSphere_Coherence_length(self):
+        optics_1 = Brightfield(
+            NA=0.15,
+            wavelength=633e-9,
+            resolution=2e-6,
+            magnification=1,
+            output_region=(0, 0, 256, 256),
+            return_field=True,
+        )
+
+        scatterer = scatterers.MieSphere(
+            position=(128, 128),
+            radius=3e-6,
+            refractive_index=1.45 + 0.1j,
+            z=2612 * 1e-6,
+            coherence_length=5.9e-05,
+        )
+
+        imaged_scatterer_1 = optics_1(scatterer)
+
+        imaged_scatterer_1.update().resolve()
+
     def test_MieStratifiedSphere(self):
         optics_1 = Brightfield(
             NA=0.7,
@@ -324,4 +346,4 @@ def test_MieStratifiedSphere(self):
 
 
 if __name__ == "__main__":
-    unittest.main()
\ No newline at end of file
+    unittest.main()