diff --git a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulProxyApplicationTests.java b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulProxyApplicationTests.java
index 66814266..208aca33 100644
--- a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulProxyApplicationTests.java
+++ b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulProxyApplicationTests.java
@@ -64,6 +64,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import static java.nio.charset.Charset.defaultCharset;
 import static org.junit.Assert.assertEquals;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
 import static org.springframework.util.StreamUtils.copyToString;
 
 import lombok.extern.slf4j.Slf4j;
@@ -272,7 +273,7 @@ class FormZuulProxyApplication {
 
 			@Override
 			public String filterType() {
-				return "pre";
+				return PRE_TYPE;
 			}
 
 			@Override
diff --git a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulServletProxyApplicationTests.java b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulServletProxyApplicationTests.java
index 755b4d2d..0dffba15 100644
--- a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulServletProxyApplicationTests.java
+++ b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/FormZuulServletProxyApplicationTests.java
@@ -62,6 +62,7 @@ import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
 import static org.junit.Assert.assertEquals;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
 
 import lombok.extern.slf4j.Slf4j;
 
@@ -182,7 +183,7 @@ class FormZuulServletProxyApplication {
 
 			@Override
 			public String filterType() {
-				return "pre";
+				return PRE_TYPE;
 			}
 
 			@Override
diff --git a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/RetryableZuulProxyApplicationTests.java b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/RetryableZuulProxyApplicationTests.java
index a5978369..bccaed86 100644
--- a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/RetryableZuulProxyApplicationTests.java
+++ b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/RetryableZuulProxyApplicationTests.java
@@ -54,6 +54,7 @@ import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RestController;
 
 import static org.junit.Assert.assertEquals;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
 
 @RunWith(SpringJUnit4ClassRunner.class)
 @SpringBootTest(classes = RetryableZuulProxyApplication.class, webEnvironment = WebEnvironment.RANDOM_PORT, value = {
@@ -117,7 +118,7 @@ class RetryableZuulProxyApplication {
 		return new ZuulFilter() {
 			@Override
 			public String filterType() {
-				return "pre";
+				return PRE_TYPE;
 			}
 
 			@Override
diff --git a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/SimpleZuulServerApplicationTests.java b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/SimpleZuulServerApplicationTests.java
index 79377a64..d49efd5a 100644
--- a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/SimpleZuulServerApplicationTests.java
+++ b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/SimpleZuulServerApplicationTests.java
@@ -46,6 +46,7 @@ import org.springframework.web.bind.annotation.RestController;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
 
 @RunWith(SpringJUnit4ClassRunner.class)
 @SpringBootTest(classes = SimpleZuulServerApplication.class, webEnvironment = WebEnvironment.RANDOM_PORT)
@@ -120,7 +121,7 @@ class SimpleZuulServerApplication {
 		return new ZuulFilter() {
 			@Override
 			public String filterType() {
-				return "pre";
+				return PRE_TYPE;
 			}
 
 			@Override
diff --git a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilterIntegrationTests.java b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilterIntegrationTests.java
index 4077ae1b..b8ac6d9c 100644
--- a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilterIntegrationTests.java
+++ b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/post/SendErrorFilterIntegrationTests.java
@@ -47,6 +47,9 @@ import org.springframework.web.bind.annotation.RestController;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.RANDOM_PORT;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.POST_TYPE;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.ROUTE_TYPE;
 
 /**
  * @author Spencer Gibb
@@ -111,7 +114,7 @@ public class SendErrorFilterIntegrationTests {
 			return new FailureFilter() {
 				@Override
 				public String filterType() {
-					return "pre";
+					return PRE_TYPE;
 				}
 			};
 		}
@@ -121,7 +124,7 @@ public class SendErrorFilterIntegrationTests {
 			return new FailureFilter() {
 				@Override
 				public String filterType() {
-					return "route";
+					return ROUTE_TYPE;
 				}
 			};
 		}
@@ -131,7 +134,7 @@ public class SendErrorFilterIntegrationTests {
 			return new FailureFilter() {
 				@Override
 				public String filterType() {
-					return "post";
+					return POST_TYPE;
 				}
 			};
 		}
diff --git a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/pre/PreDecorationFilterTests.java b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/pre/PreDecorationFilterTests.java
index 6e737316..5969435f 100644
--- a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/pre/PreDecorationFilterTests.java
+++ b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/pre/PreDecorationFilterTests.java
@@ -42,6 +42,7 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.MockitoAnnotations.initMocks;
 import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.FORWARD_TO_KEY;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
 import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.REQUEST_URI_KEY;
 import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.SERVICE_ID_KEY;
 
@@ -85,7 +86,7 @@ public class PreDecorationFilterTests {
 	public void basicProperties() throws Exception {
 		assertEquals(5, this.filter.filterOrder());
 		assertEquals(true, this.filter.shouldFilter());
-		assertEquals("pre", this.filter.filterType());
+		assertEquals(PRE_TYPE, this.filter.filterType());
 	}
 
 	@Test
diff --git a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/route/support/ZuulProxyTestBase.java b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/route/support/ZuulProxyTestBase.java
index cd26f6bf..c3f07d5e 100644
--- a/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/route/support/ZuulProxyTestBase.java
+++ b/spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/filters/route/support/ZuulProxyTestBase.java
@@ -82,6 +82,7 @@ import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assume.assumeThat;
+import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;
 
 /**
  * @author Spencer Gibb
@@ -406,7 +407,7 @@ public abstract class ZuulProxyTestBase {
 			return new ZuulFilter() {
 				@Override
 				public String filterType() {
-					return "pre";
+					return PRE_TYPE;
 				}
 
 				@Override