diff --git a/pyrender/primitive.py b/pyrender/primitive.py
index 7f83f46..d19dc95 100644
--- a/pyrender/primitive.py
+++ b/pyrender/primitive.py
@@ -212,7 +212,7 @@ def indices(self):
     @indices.setter
     def indices(self, value):
         if value is not None:
-            value = np.asanyarray(value, dtype=np.float32)
+            value = np.asanyarray(value, dtype=np.uint32)
             value = np.ascontiguousarray(value)
         self._indices = value