diff --git a/src/brevitas/quant/base.py b/src/brevitas/quant/base.py
index 7cd050e21..e27cd1094 100644
--- a/src/brevitas/quant/base.py
+++ b/src/brevitas/quant/base.py
@@ -363,6 +363,7 @@ class AccumulatorAwarePerChannelPreNorm(PerChannelPreNorm):
     pre_scaling_impl = AccumulatorAwareParameterPreScaling
     accumulator_bit_width = (this << 1).accumulator_bit_width
     accumulator_bit_width_impl = (this << 1).accumulator_bit_width_impl
+    restrict_pre_scaling_impl = (this << 1).restrict_pre_scaling_impl
 
 
 class AccumulatorAwareZeroCenterPerChannelPreNorm(AccumulatorAwarePerChannelPreNorm):
@@ -373,6 +374,7 @@ class AccumulatorAwareZeroCenterPerChannelPreNorm(AccumulatorAwarePerChannelPreN
     pre_zero_point_stats_input_view_shape_impl = this.scaling_stats_input_view_shape_impl
     stats_reduce_dim = SCALING_STATS_REDUCE_DIM
     scaling_shape = (this << 1).scaling_shape
+    restrict_pre_scaling_impl = (this << 1).restrict_pre_scaling_impl
 
 
 class SolvePostScaleGranularity(ExtendedInjector):