diff --git a/.idea/runConfigurations/Trader_Demo__Run_Buyer.xml b/.idea/runConfigurations/Trader_Demo__Run_Buyer.xml
index 166781bed1..21a140d525 100644
--- a/.idea/runConfigurations/Trader_Demo__Run_Buyer.xml
+++ b/.idea/runConfigurations/Trader_Demo__Run_Buyer.xml
@@ -3,7 +3,7 @@
     <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
     <option name="MAIN_CLASS_NAME" value="net.corda.traderdemo.TraderDemoKt" />
     <option name="VM_PARAMETERS" value="-ea -javaagent:lib/quasar.jar " />
-    <option name="PROGRAM_PARAMETERS" value="--role BUYER" />
+    <option name="PROGRAM_PARAMETERS" value="--role BUYER --certificates=&quot;build/trader-demo-nodes/Bank A/certificates&quot;" />
     <option name="WORKING_DIRECTORY" value="" />
     <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
     <option name="ALTERNATIVE_JRE_PATH" />
@@ -12,4 +12,4 @@
     <envs />
     <method />
   </configuration>
-</component>
+</component>
\ No newline at end of file
diff --git a/.idea/runConfigurations/Trader_Demo__Run_Seller.xml b/.idea/runConfigurations/Trader_Demo__Run_Seller.xml
index 3412483e66..530b17f0db 100644
--- a/.idea/runConfigurations/Trader_Demo__Run_Seller.xml
+++ b/.idea/runConfigurations/Trader_Demo__Run_Seller.xml
@@ -3,7 +3,7 @@
     <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
     <option name="MAIN_CLASS_NAME" value="net.corda.traderdemo.TraderDemoKt" />
     <option name="VM_PARAMETERS" value="-ea -javaagent:lib/quasar.jar " />
-    <option name="PROGRAM_PARAMETERS" value="--role SELLER" />
+    <option name="PROGRAM_PARAMETERS" value="--role SELLER --certificates=&quot;build/trader-demo-nodes/Bank B/certificates&quot;" />
     <option name="WORKING_DIRECTORY" value="" />
     <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
     <option name="ALTERNATIVE_JRE_PATH" />
@@ -12,4 +12,4 @@
     <envs />
     <method />
   </configuration>
-</component>
+</component>
\ No newline at end of file
diff --git a/samples/trader-demo/src/main/kotlin/net/corda/traderdemo/Main.kt b/samples/trader-demo/src/main/kotlin/net/corda/traderdemo/Main.kt
index 4261b62043..f8ccc84768 100644
--- a/samples/trader-demo/src/main/kotlin/net/corda/traderdemo/Main.kt
+++ b/samples/trader-demo/src/main/kotlin/net/corda/traderdemo/Main.kt
@@ -7,17 +7,23 @@ import net.corda.node.services.User
 import net.corda.node.services.startFlowPermission
 import net.corda.node.services.transactions.SimpleNotaryService
 import net.corda.testing.BOC
+import java.nio.file.Paths
+import net.corda.core.div
 
 /**
  * This file is exclusively for being able to run your nodes through an IDE (as opposed to running deployNodes)
  * Do not use in a production environment.
  */
 fun main(args: Array<String>) {
-    driver(dsl = {
+    val permissions = setOf(
+            startFlowPermission<IssuerFlow.IssuanceRequester>(),
+            startFlowPermission<net.corda.traderdemo.flow.SellerFlow>())
+    val demoUser = listOf(User("demo", "demo", permissions))
+    driver(driverDirectory = Paths.get("build") / "trader-demo-nodes", dsl = {
         val user = User("user1", "test", permissions = setOf(startFlowPermission<IssuerFlow.IssuanceRequester>()))
         startNode("Notary", setOf(ServiceInfo(SimpleNotaryService.type)))
-        startNode("Bank A")
-        startNode("Bank B")
+        startNode("Bank A", rpcUsers = demoUser)
+        startNode("Bank B", rpcUsers = demoUser)
         startNode(BOC.name, rpcUsers = listOf(user))
         waitForAllNodesToFinish()
     }, isDebug = true)