diff --git a/Tpm2Tester/TestSubstrate/TestConfig.cs b/Tpm2Tester/TestSubstrate/TestConfig.cs
index f54280a2..bddd1044 100644
--- a/Tpm2Tester/TestSubstrate/TestConfig.cs
+++ b/Tpm2Tester/TestSubstrate/TestConfig.cs
@@ -129,7 +129,7 @@ public class TestConfig
         // Only used with a TCP TPM device (TPM Simulator or TPM Proxy)
         internal TcpTpmDevice TheTcpTpmDevice = null;
 #else
-        internal TpmDeviceType DeviceType = TpmDeviceTypes.tbs;
+        internal TpmDeviceType DeviceType = TpmDeviceType.tbs;
 #endif
 
         // Duration of the stresss mode session (with -tpm option).