diff --git a/tests/fpgadataflow/test_minimize_bit_width.py b/tests/fpgadataflow/test_minimize_bit_width.py
index 4be0a260b7..0e704230e7 100644
--- a/tests/fpgadataflow/test_minimize_bit_width.py
+++ b/tests/fpgadataflow/test_minimize_bit_width.py
@@ -296,8 +296,13 @@ def test_minimize_accumulator_width(wdt: DataType, idt: DataType, tdt: DataType,
             exp_adt = calculate_accumulator_bit_width(inst, model)
             assert cur_adt.bitwidth() <= exp_adt.bitwidth(), "Mismatched accumulation data types"
 
-            # if there is no activation, outputDataType = accDataType
+            # if there is no activation, outputDataType = accDataType and if it is the last node
+            # it needs to be divisible by 8
             if inst.get_nodeattr("noActivation"):
                 assert (
                     cur_adt.bitwidth() == cur_odt.bitwidth()
                 ), "outputDataType and accDataType should be equal"
+                if model.find_direct_successors(inst.onnx_node) is None:
+                    assert (
+                        cur_adt.bitwidth() % 8
+                    ) == 0, "bit width of last node needs to be divisible by 8"