diff --git a/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mobile/DeviceResolverAutoConfigurationTests.java b/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mobile/DeviceResolverAutoConfigurationTests.java
index b4e2abaee50..06e2d49bca4 100644
--- a/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mobile/DeviceResolverAutoConfigurationTests.java
+++ b/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mobile/DeviceResolverAutoConfigurationTests.java
@@ -128,9 +128,9 @@ public class DeviceResolverAutoConfigurationTests {
 		@RequestMapping("/")
 		public ResponseEntity<Void> test(Device device) {
 			if (device.getDevicePlatform() != null) {
-				return new ResponseEntity<>(HttpStatus.OK);
+				return new ResponseEntity<Void>(HttpStatus.OK);
 			}
-			return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
+			return new ResponseEntity<Void>(HttpStatus.INTERNAL_SERVER_ERROR);
 		}
 
 	}