diff --git a/R/cellPixels.R b/R/cellPixels.R
index 6e85ca4..3b34bd0 100644
--- a/R/cellPixels.R
+++ b/R/cellPixels.R
@@ -57,6 +57,7 @@ cellPixels <- function(input_dir = NULL,
                        add_scale_bar = FALSE,
                        thresh_w_h_nucleus = NULL,
                        thresh_w_h_cytosol = NULL,
+                       thresh_w_h_protein_in_nucleus = NULL,
                        thresh_offset_nucleus = NULL,
                        thresh_offset_protein_in_nucleus = NULL,
                        thresh_offset_protein_in_cytosol = NULL,