diff --git a/.travis.yml b/.travis.yml
index 529e7ff0477..d928330aa4e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,8 +6,15 @@ jdk:
     - oraclejdk8
     - openjdk7
 
+cache:
+  directories:
+  - '$HOME/.m2/repository'
+
+install:
+  - ./mvnw clean install -DskipTests=true -Dcheckstyle.skip=false -Drat.skip=false -Dmaven.javadoc.skip=true
+
 script:
-    - travis_wait 30 ./mvnw clean package
+    - travis_wait 30 ./mvnw test
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)
diff --git a/dubbo-config/dubbo-config-api/src/test/java/com/alibaba/dubbo/config/RegistryConfigTest.java b/dubbo-config/dubbo-config-api/src/test/java/com/alibaba/dubbo/config/RegistryConfigTest.java
index 1d9bbe2038f..086a4fa589f 100644
--- a/dubbo-config/dubbo-config-api/src/test/java/com/alibaba/dubbo/config/RegistryConfigTest.java
+++ b/dubbo-config/dubbo-config-api/src/test/java/com/alibaba/dubbo/config/RegistryConfigTest.java
@@ -69,6 +69,7 @@ public void testWait() throws Exception {
         registry.setWait(10);
         assertThat(registry.getWait(), is(10));
         assertThat(System.getProperty(Constants.SHUTDOWN_WAIT_KEY), equalTo("10"));
+        System.clearProperty(Constants.SHUTDOWN_WAIT_KEY);
     }
 
     @Test