diff --git a/build.gradle b/build.gradle
index c1047c6c..f3d5ba80 100644
--- a/build.gradle
+++ b/build.gradle
@@ -245,6 +245,10 @@ subprojects { subproject ->
 			testCompile "org.springframework:spring-test"
 		}
 
+		configurations {
+			all*.exclude group: 'com.fasterxml.jackson.module', module: 'jackson-module-kotlin'
+		}
+
 		// enable all compiler warnings; individual projects may customize further
 		ext.xLintArg = '-Xlint:all,-options'
 		[compileJava, compileTestJava]*.options*.compilerArgs = [xLintArg]
diff --git a/dsl/si4demo/src/main/java/org/springframework/integration/samples/si4demo/annotations/Application.java b/dsl/si4demo/src/main/java/org/springframework/integration/samples/si4demo/annotations/Application.java
index ea7246ae..e0942092 100644
--- a/dsl/si4demo/src/main/java/org/springframework/integration/samples/si4demo/annotations/Application.java
+++ b/dsl/si4demo/src/main/java/org/springframework/integration/samples/si4demo/annotations/Application.java
@@ -123,8 +123,8 @@ public class Application {
 //	}
 
 	@Bean
-	@Transformer(inputChannel="requestChannel", outputChannel="searchChannel")
-	public org.springframework.integration.transformer.Transformer converttoString() {
+	@Transformer(inputChannel = "requestChannel", outputChannel = "searchChannel")
+	public org.springframework.integration.transformer.Transformer convertToString() {
 		return new ObjectToStringTransformer();
 	}
 
@@ -134,7 +134,7 @@ public class Application {
 	}
 
 	@Bean
-	@ServiceActivator(inputChannel="searchChannel")
+	@ServiceActivator(inputChannel = "searchChannel")
 	public TwitterSearchOutboundGateway twitterGate() {
 		TwitterSearchOutboundGateway gateway = new TwitterSearchOutboundGateway(twitter());
 		gateway.setOutputChannel(toJsonChannel());
@@ -147,8 +147,8 @@ public class Application {
 	}
 
 	@Bean
-	@Transformer(inputChannel="toJsonChannel")
-	public org.springframework.integration.transformer.Transformer converttoJson() {
+	@Transformer(inputChannel = "toJsonChannel")
+	public org.springframework.integration.transformer.Transformer convertToJson() {
 		return new ObjectToJsonTransformer();
 	}