diff --git a/python/grass/temporal/univar_statistics.py b/python/grass/temporal/univar_statistics.py
index e4dba3b4ac..9e68fd7ce2 100755
--- a/python/grass/temporal/univar_statistics.py
+++ b/python/grass/temporal/univar_statistics.py
@@ -57,7 +57,7 @@ def compute_univar_stats(registered_map_info, stats_module, fs, rast_region=Fals
     )
 
     stats_module.inputs.map = id
-    if rast_region and stats_module.inputs.zones:
+    if rast_region and (stats_module.inputs.zones or stats_module.name == "r3.univar"):
         stats_module.env = gs.region_env(raster=id)
     stats_module.run()