diff --git a/src/roiextractors/segmentationextractor.py b/src/roiextractors/segmentationextractor.py
index 15a35308..3c2881c1 100644
--- a/src/roiextractors/segmentationextractor.py
+++ b/src/roiextractors/segmentationextractor.py
@@ -201,7 +201,7 @@ def get_background_pixel_masks(self, background_ids=None) -> np.array:
 
         Parameters
         ----------
-        roi_ids: array_like
+        background_ids: array_like
             A list or 1D array of ids of the ROIs. Length is the number of ROIs requested.
 
         Returns