diff --git a/src/brevitas/quant_tensor/__init__.py b/src/brevitas/quant_tensor/__init__.py
index 6dda6bb32..707f12854 100644
--- a/src/brevitas/quant_tensor/__init__.py
+++ b/src/brevitas/quant_tensor/__init__.py
@@ -415,7 +415,7 @@ def __truediv__(self, other):
             if self.is_zero_zero_point(self) and self.is_zero_zero_point(other):
                 output_zero_point = self.zero_point * other.zero_point  # Output zero_point is a new, zero-valued tensor
             else:
-                output_zero_point = None  # TODO non-zero zero point
+                raise RuntimeError("Zero-points of div operands are non-zero, not supported.")
             output = QuantTensor(
                 value=output_tensor,
                 scale=output_scale,