diff --git a/2d_spots_in_fibers.py b/2d_spots_in_fibers.py
index 00f041172e0df123862e3917e7f92eb7a7171be0..036a2986c5917ffacf1c8ec1034e6c4014952b04 100644
--- a/2d_spots_in_fibers.py
+++ b/2d_spots_in_fibers.py
@@ -439,7 +439,7 @@ def save_results_table(results_table, filename, suffix, target):
 
 
 def save_labelimage_as_ijroiset(label_imp, rm, filename, suffix, target):
-    """Save all labels i a label Images as IJ-ROIset to target location.
+    """Save all labels in a label Images as IJ-ROIset to target location.
       Only 2D, requires PTBIOP update site.
 
     Parameters