diff --git a/generators/chipyard/src/main/scala/config/SpikeConfigs.scala b/generators/chipyard/src/main/scala/config/SpikeConfigs.scala
index 9153d05b..6b3e1244 100644
--- a/generators/chipyard/src/main/scala/config/SpikeConfigs.scala
+++ b/generators/chipyard/src/main/scala/config/SpikeConfigs.scala
@@ -18,6 +18,7 @@ class dmiSpikeConfig extends Config(
 // Avoids polling on the UART registers
 class SpikeFastUARTConfig extends Config(
   new chipyard.WithNSpikeCores(1) ++
+  new chipyard.config.WithNoUART() ++
   new chipyard.config.WithUART(txEntries=128, rxEntries=128) ++
   new chipyard.config.WithMemoryBusFrequency(2) ++
   new chipyard.config.WithPeripheryBusFrequency(2) ++
@@ -27,6 +28,7 @@ class SpikeFastUARTConfig extends Config(
 class SpikeUltraFastConfig extends Config(
   new chipyard.WithSpikeTCM ++
   new chipyard.WithNSpikeCores(1) ++
+  new chipyard.config.WithNoUART() ++
   new chipyard.config.WithUART(txEntries=128, rxEntries=128) ++
   new chipyard.config.WithMemoryBusFrequency(2) ++
   new chipyard.config.WithPeripheryBusFrequency(2) ++
@@ -47,6 +49,7 @@ class SpikeUltraFastDevicesConfig extends Config(
 
   new chipyard.WithSpikeTCM ++
   new chipyard.WithNSpikeCores(1) ++
+  new chipyard.config.WithNoUART() ++
   new chipyard.config.WithUART(txEntries=128, rxEntries=128) ++
   new chipyard.config.WithMemoryBusFrequency(2) ++
   new chipyard.config.WithPeripheryBusFrequency(2) ++