diff --git a/mantidimaging/core/operations/remove_dead_stripe/remove_dead_stripe.py b/mantidimaging/core/operations/remove_dead_stripe/remove_dead_stripe.py
index a926ba06c80..97a5339c922 100644
--- a/mantidimaging/core/operations/remove_dead_stripe/remove_dead_stripe.py
+++ b/mantidimaging/core/operations/remove_dead_stripe/remove_dead_stripe.py
@@ -50,8 +50,7 @@ def filter_func(images: ImageStack, snr=3, size=61, progress=None):
             compute_func = RemoveDeadStripesFilter.compute_function_sino
         else:
             compute_func = RemoveDeadStripesFilter.compute_function
-
-        ps.run_compute_func(compute_func, images.num_projections, images.shared_array, params, progress)
+        ps.run_compute_func(compute_func, images.num_sinograms, images.shared_array, params, progress)
         return images
 
     @staticmethod
diff --git a/mantidimaging/core/operations/remove_large_stripe/remove_large_stripe.py b/mantidimaging/core/operations/remove_large_stripe/remove_large_stripe.py
index 378d4edce16..0fc53bda153 100644
--- a/mantidimaging/core/operations/remove_large_stripe/remove_large_stripe.py
+++ b/mantidimaging/core/operations/remove_large_stripe/remove_large_stripe.py
@@ -48,8 +48,7 @@ def filter_func(images: 'ImageStack', snr=3, la_size=61, progress=None):
             compute_func = RemoveLargeStripesFilter.compute_function_sino
         else:
             compute_func = RemoveLargeStripesFilter.compute_function
-
-        ps.run_compute_func(compute_func, images.num_projections, images.shared_array, params, progress)
+        ps.run_compute_func(compute_func, images.num_sinograms, images.shared_array, params, progress)
         return images
 
     @staticmethod