diff --git a/src/axi/tb/taxi_axi_crossbar/test_taxi_axi_crossbar.py b/src/axi/tb/taxi_axi_crossbar/test_taxi_axi_crossbar.py
index 1981e3f..bcfe8cb 100644
--- a/src/axi/tb/taxi_axi_crossbar/test_taxi_axi_crossbar.py
+++ b/src/axi/tb/taxi_axi_crossbar/test_taxi_axi_crossbar.py
@@ -198,7 +198,7 @@ if getattr(cocotb, 'top', None) is not None:
         factory = TestFactory(test)
         factory.add_option("idle_inserter", [None, cycle_pause])
         factory.add_option("backpressure_inserter", [None, cycle_pause])
-        # factory.add_option("size", [None]+list(range(max_burst_size)))
+        factory.add_option("size", [None]+list(range(max_burst_size)))
         factory.add_option("s", range(min(s_count, 2)))
         factory.add_option("m", range(min(m_count, 2)))
         factory.generate_tests()
diff --git a/src/axi/tb/taxi_axi_interconnect/test_taxi_axi_interconnect.py b/src/axi/tb/taxi_axi_interconnect/test_taxi_axi_interconnect.py
index a952c22..a36839e 100644
--- a/src/axi/tb/taxi_axi_interconnect/test_taxi_axi_interconnect.py
+++ b/src/axi/tb/taxi_axi_interconnect/test_taxi_axi_interconnect.py
@@ -192,7 +192,7 @@ if getattr(cocotb, 'top', None) is not None:
         factory = TestFactory(test)
         factory.add_option("idle_inserter", [None, cycle_pause])
         factory.add_option("backpressure_inserter", [None, cycle_pause])
-        # factory.add_option("size", [None]+list(range(max_burst_size)))
+        factory.add_option("size", [None]+list(range(max_burst_size)))
         factory.add_option("s", range(min(s_count, 2)))
         factory.add_option("m", range(min(m_count, 2)))
         factory.generate_tests()