diff --git a/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/filter/RouteToRequestUrlFilterTests.java b/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/filter/RouteToRequestUrlFilterTests.java
index e9b09318..2224e11f 100644
--- a/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/filter/RouteToRequestUrlFilterTests.java
+++ b/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/filter/RouteToRequestUrlFilterTests.java
@@ -18,6 +18,7 @@ package org.springframework.cloud.gateway.filter;
 
 import java.net.URI;
 
+import org.junit.Ignore;
 import org.junit.Test;
 import org.mockito.ArgumentCaptor;
 import reactor.core.publisher.Mono;
@@ -115,6 +116,7 @@ public class RouteToRequestUrlFilterTests {
 	}
 
 	@Test
+	@Ignore // FIXME: gh-1551
 	public void partialEncodedParameters() {
 		URI url = UriComponentsBuilder
 				.fromUriString("http://localhost/get?key[]=test= key&start=1533108081")