diff --git a/omnigibson/prims/geom_prim.py b/omnigibson/prims/geom_prim.py
index 0c12beada..7b03dad9e 100644
--- a/omnigibson/prims/geom_prim.py
+++ b/omnigibson/prims/geom_prim.py
@@ -117,7 +117,7 @@ def opacity(self, opacity):
         if self.has_material():
             self.material.opacity_constant = opacity
         else:
-            self.set_attribute("primvars:displayOpacity", th.tensor([opacity]))
+            self.set_attribute("primvars:displayOpacity", np.array([opacity]))
 
     @property
     def points(self):