diff --git a/codec-http/src/test/java/io/netty/handler/codec/http/cors/CorsConfigTest.java b/codec-http/src/test/java/io/netty/handler/codec/http/cors/CorsConfigTest.java
index 6919b6fcf3..e0dfed8962 100644
--- a/codec-http/src/test/java/io/netty/handler/codec/http/cors/CorsConfigTest.java
+++ b/codec-http/src/test/java/io/netty/handler/codec/http/cors/CorsConfigTest.java
@@ -101,7 +101,7 @@ public class CorsConfigTest {
 
     @Test (expected = IllegalArgumentException.class)
     public void shouldThrowIfValueIsNull() {
-        withOrigin("*").preflightResponseHeader("HeaderName", null).build();
+        withOrigin("*").preflightResponseHeader("HeaderName", new Object[]{null}).build();
     }
 
 }