diff --git a/docs/source/running-the-demos.rst b/docs/source/running-the-demos.rst
index f1a4e6a0b5..5c06a32ef2 100644
--- a/docs/source/running-the-demos.rst
+++ b/docs/source/running-the-demos.rst
@@ -64,10 +64,10 @@ on a simulated clock passes.
 
 To run from the command line in Unix:
 
-1. Run ``./gradlew samples:irs-demo:deployNodes`` to install configs and a command line tool under ``samples/irs-demo/build``
+1. Run ``./gradlew samples:irs-demo:deployNodes`` to install configs and a command line tool under ``samples/irs-demo/build``.
 2. Run ``./gradlew samples:irs-demo:installDist``
 3. Move to the ``samples/irs-demo/build`` directory
-4. Run ``./nodes/runnodes`` to open up three new terminals with the three nodes
+4. Run ``./nodes/runnodes`` to open up three new terminals with the three nodes (you may have to install xterm).
 5. Run ``./install/irs-demo/bin/irs-demo --role UploadRates``. You should see a
    message be printed to the first node (the notary/oracle/network map node) saying that it has accepted the new
    interest rates
diff --git a/samples/irs-demo/src/main/kotlin/net/corda/irs/plugin/IRSPlugin.kt b/samples/irs-demo/src/main/kotlin/net/corda/irs/plugin/IRSPlugin.kt
index 6a36215e56..9f3bc79a0c 100644
--- a/samples/irs-demo/src/main/kotlin/net/corda/irs/plugin/IRSPlugin.kt
+++ b/samples/irs-demo/src/main/kotlin/net/corda/irs/plugin/IRSPlugin.kt
@@ -58,6 +58,8 @@ class IRSPlugin : CordaPluginRegistry() {
             register(DateRollConvention::class.java)
             register(LocalDate::class.java)
             register(FixingFlow.FixingSession::class.java)
+            register(FixedRatePaymentEvent::class.java)
+            register(FloatingRatePaymentEvent::class.java)
         }
         return true
     }