diff --git a/core/src/test/kotlin/net/corda/core/serialization/CordaClassResolverTests.kt b/core/src/test/kotlin/net/corda/core/serialization/CordaClassResolverTests.kt
index bd95d319d9..0ccad7ade3 100644
--- a/core/src/test/kotlin/net/corda/core/serialization/CordaClassResolverTests.kt
+++ b/core/src/test/kotlin/net/corda/core/serialization/CordaClassResolverTests.kt
@@ -72,6 +72,8 @@ class DefaultSerializableSerializer : Serializer<DefaultSerializable>() {
 class CordaClassResolverTests {
     @Test
     fun `Annotation on enum works for specialised entries`() {
+        // TODO: Remove this suppress when we upgrade to kotlin 1.1 or when JetBrain fixes the bug.
+        @Suppress("UNSUPPORTED_FEATURE")
         CordaClassResolver(EmptyWhitelist).getRegistration(Foo.Bar::class.java)
     }
 
diff --git a/samples/irs-demo/src/main/kotlin/net/corda/irs/api/InterestRateSwapAPI.kt b/samples/irs-demo/src/main/kotlin/net/corda/irs/api/InterestRateSwapAPI.kt
index 4aa4ad5b76..bfe16d166f 100644
--- a/samples/irs-demo/src/main/kotlin/net/corda/irs/api/InterestRateSwapAPI.kt
+++ b/samples/irs-demo/src/main/kotlin/net/corda/irs/api/InterestRateSwapAPI.kt
@@ -97,6 +97,8 @@ class InterestRateSwapAPI(val rpc: CordaRPCOps) {
         val priorDemoDate = fetchDemoDate()
         // Can only move date forwards
         if (newDemoDate.isAfter(priorDemoDate)) {
+            // TODO: Remove this suppress when we upgrade to kotlin 1.1 or when JetBrain fixes the bug.
+            @Suppress("UNSUPPORTED_FEATURE")
             rpc.startFlow(UpdateBusinessDayFlow::Broadcast, newDemoDate).returnValue.getOrThrow()
             return Response.ok().build()
         }
diff --git a/samples/raft-notary-demo/src/main/kotlin/net/corda/notarydemo/NotaryDemo.kt b/samples/raft-notary-demo/src/main/kotlin/net/corda/notarydemo/NotaryDemo.kt
index 71e772aece..e24100128a 100644
--- a/samples/raft-notary-demo/src/main/kotlin/net/corda/notarydemo/NotaryDemo.kt
+++ b/samples/raft-notary-demo/src/main/kotlin/net/corda/notarydemo/NotaryDemo.kt
@@ -76,6 +76,8 @@ private class NotaryDemoClientApi(val rpc: CordaRPCOps) {
      * @return a list of encoded signer public keys - one for every transaction
      */
     private fun notariseTransactions(transactions: List<SignedTransaction>): List<String> {
+        // TODO: Remove this suppress when we upgrade to kotlin 1.1 or when JetBrain fixes the bug.
+        @Suppress("UNSUPPORTED_FEATURE")
         val signatureFutures = transactions.map { rpc.startFlow(NotaryFlow::Client, it).returnValue }
         return Futures.allAsList(signatureFutures).getOrThrow().map { it.map { it.by.toStringShort() }.joinToString() }
     }
diff --git a/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/api/PortfolioApi.kt b/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/api/PortfolioApi.kt
index 8f1d09f08c..82e5e759b1 100644
--- a/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/api/PortfolioApi.kt
+++ b/samples/simm-valuation-demo/src/main/kotlin/net/corda/vega/api/PortfolioApi.kt
@@ -269,6 +269,8 @@ class PortfolioApi(val rpc: CordaRPCOps) {
         return withParty(partyName) { otherParty ->
             val existingSwap = getPortfolioWith(otherParty)
             val flowHandle = if (existingSwap == null) {
+                // TODO: Remove this suppress when we upgrade to kotlin 1.1 or when JetBrain fixes the bug.
+                @Suppress("UNSUPPORTED_FEATURE")
                 rpc.startFlow(SimmFlow::Requester, otherParty, params.valuationDate)
             } else {
                 rpc.startFlow(SimmRevaluation::Initiator, getPortfolioStateAndRefWith(otherParty).ref, params.valuationDate)