diff --git a/src/rtc/rtc_s1_single_job.py b/src/rtc/rtc_s1_single_job.py
index 60af24c..da0954e 100755
--- a/src/rtc/rtc_s1_single_job.py
+++ b/src/rtc/rtc_s1_single_job.py
@@ -915,6 +915,7 @@ def compute_layover_shadow_mask(radar_grid: isce3.product.RadarGridParameters,
                           orbit,
                           ellipsoid,
                           grid_doppler,
+                          epsg_out=dem_raster.get_epsg(),
                           threshold=threshold_rdr2geo,
                           numiter=numiter_rdr2geo,
                           extraiter=extraiter_rdr2geo,