diff --git a/docs/src/main/asciidoc/intro.adoc b/docs/src/main/asciidoc/intro.adoc
index 7cd3ee3cf..75740eafc 100644
--- a/docs/src/main/asciidoc/intro.adoc
+++ b/docs/src/main/asciidoc/intro.adoc
@@ -66,7 +66,7 @@ public class ModuleApplicationTests {
 
 	@Test
 	public void contextLoads() {
-		assertNotNull(this.sink.output());
+		assertNotNull(this.source.output());
 	}
 
 }