diff --git a/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/Route.java b/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/Route.java
index 42ea5417..58835691 100644
--- a/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/Route.java
+++ b/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/Route.java
@@ -114,7 +114,9 @@ public class Route implements Ordered {
 
 		public B uri(URI uri) {
 			this.uri = uri;
-			if (this.uri.getPort() < 0 && this.uri.getScheme().startsWith("http")) {
+			String scheme = this.uri.getScheme();
+			Assert.hasText(scheme, "The parameter [" + this.uri + "] format is incorrect, scheme can not be empty");
+			if (this.uri.getPort() < 0 && scheme.startsWith("http")) {
 				// default known http ports
 				int port = this.uri.getScheme().equals("https") ? 443 : 80;
 				this.uri = UriComponentsBuilder.fromUri(this.uri)
diff --git a/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/route/RouteTests.java b/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/route/RouteTests.java
index 9eec371a..cfdcd33d 100644
--- a/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/route/RouteTests.java
+++ b/spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/route/RouteTests.java
@@ -17,12 +17,17 @@
 
 package org.springframework.cloud.gateway.route;
 
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.ExpectedException;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 public class RouteTests {
 
+	@Rule
+	public ExpectedException exception = ExpectedException.none();
+
 	@Test
 	public void defeaultHttpPort() {
 		Route route = Route.async().id("1")
@@ -47,7 +52,6 @@ public class RouteTests {
 				.hasPort(443);
 	}
 
-
 	@Test
 	public void fullUri() {
 		Route route = Route.async().id("1")
@@ -59,4 +63,12 @@ public class RouteTests {
 				.hasScheme("http")
 				.hasPort(8080);
 	}
+
+	@Test
+	public void nullScheme() {
+		exception.expect(IllegalArgumentException.class);
+		Route.async().id("1")
+				.predicate(exchange -> true)
+				.uri("/pathonly");
+	}
 }