diff --git a/python/lsst/pipe/tasks/healSparseMapping.py b/python/lsst/pipe/tasks/healSparseMapping.py
index 9144c72c5a..eba1ea1d76 100644
--- a/python/lsst/pipe/tasks/healSparseMapping.py
+++ b/python/lsst/pipe/tasks/healSparseMapping.py
@@ -549,6 +549,10 @@ def run(self, sky_map, tract, band, coadd_dict, input_map_dict, visit_summary_di
             if input_map.valid_pixels.size == 0:
                 self.log.warning("No valid pixels for band %s, tract %d, patch %d; skipping.",
                                  band, tract, patch)
+                # Skip if we've already initialized our tract maps.
+                if tract_maps_initialized:
+                    continue
+
             coadd_photo_calib = coadd_dict[patch].get(component="photoCalib")
             coadd_inputs = coadd_dict[patch].get(component="coaddInputs")