azkaban-aplcache

diff --git a/azkaban-common/build.gradle b/azkaban-common/build.gradle
index 44107da..0b60ae4 100644
--- a/azkaban-common/build.gradle
+++ b/azkaban-common/build.gradle
@@ -23,7 +23,6 @@ dependencies {
   compile('commons-io:commons-io:2.4')
   compile('commons-lang:commons-lang:2.6')
   compile('javax.mail:mail:1.4.5')
-  compile('javax.servlet:servlet-api:2.5')
   compile('joda-time:joda-time:2.0')
   compile('log4j:log4j:1.2.16')
   compile('mysql:mysql-connector-java:5.1.28')

diff --git a/azkaban-common/src/main/java/azkaban/server/HttpRequestUtils.java b/azkaban-common/src/main/java/azkaban/server/HttpRequestUtils.java
index fc159ec..678a1f9 100644
--- a/azkaban-common/src/main/java/azkaban/server/HttpRequestUtils.java
+++ b/azkaban-common/src/main/java/azkaban/server/HttpRequestUtils.java
@@ -299,8 +299,7 @@ public class HttpRequestUtils {
   public static Map<String, String> getParamGroup(HttpServletRequest request,
       String groupName) throws ServletException {
     @SuppressWarnings("unchecked")
-    Enumeration<Object> enumerate =
-        (Enumeration<Object>) request.getParameterNames();
+    Enumeration<String> enumerate = request.getParameterNames();
     String matchString = groupName + "[";
 
     HashMap<String, String> groupParam = new HashMap<String, String>();