diff --git a/2d_spots_in_fibers.py b/2d_spots_in_fibers.py
index fff22065d5321ef95bb90e9fa586af17369fbb9b..510df1eebc384510f5935c8756d179ed4234c6a7 100644
--- a/2d_spots_in_fibers.py
+++ b/2d_spots_in_fibers.py
@@ -332,7 +332,7 @@ def convert_labelimage_to_binary(label_imp, scale_binary=True):
 
     return binary_imp
 
-
+# TODO: test simpler way using IJ roi measure
 def measure_intensity_sum(label_imp, target_imp):
     """Measure the sum intensity for each label in a label image on another target image.
     Uses imglib2 and ops for this and works with both 2D and 3D label images.