diff --git a/src/main/java/redis/clients/jedis/JedisSentinelPool.java b/src/main/java/redis/clients/jedis/JedisSentinelPool.java
index 84afe80..b3e6abd 100644
--- a/src/main/java/redis/clients/jedis/JedisSentinelPool.java
+++ b/src/main/java/redis/clients/jedis/JedisSentinelPool.java
@@ -130,8 +130,15 @@ public class JedisSentinelPool extends Pool<Jedis> {
 		    jedis = new Jedis(hap.getHost(), hap.getPort());
 
 		    if (master == null) {
-			master = toHostAndPort(jedis
-				.sentinelGetMasterAddrByName(masterName));
+			List<String> masterAddr = jedis
+				.sentinelGetMasterAddrByName(masterName);
+			if (masterAddr == null || masterAddr.size() != 2) {
+			    log.warning("Can not get master addr, master name: "
+				    + masterName + ". Sentinel: " + hap + ".");
+			    continue;
+			}
+
+			master = toHostAndPort(masterAddr);
 			log.fine("Found Redis master at " + master);
 			break outer;
 		    }
@@ -140,7 +147,7 @@ public class JedisSentinelPool extends Pool<Jedis> {
 			    + ". Trying next one.");
 		} finally {
 		    if (jedis != null) {
-	        jedis.close();
+			jedis.close();
 		    }
 		}
 	    }
@@ -331,4 +338,4 @@ public class JedisSentinelPool extends Pool<Jedis> {
 	    }
 	}
     }
-}
+}
\ No newline at end of file
diff --git a/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java b/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java
index 0308d0a..1fac249 100644
--- a/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java
+++ b/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java
@@ -2,6 +2,7 @@ package redis.clients.jedis.tests;
 
 import java.util.HashSet;
 import java.util.Set;
+import java.util.concurrent.TimeUnit;
 
 import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
 import org.junit.Before;
@@ -41,6 +42,30 @@ public class JedisSentinelPoolTest extends JedisTestBase {
 	sentinelJedis2 = new Jedis(sentinel2.getHost(), sentinel2.getPort());
     }
     
+    @Test
+    public void errorMasterNameNotThrowException() throws InterruptedException {
+	final String wrongMasterName = "wrongMasterName";
+	new Thread(new Runnable() {
+	    @Override
+	    public void run() {
+		try {
+		    TimeUnit.SECONDS.sleep(3);
+		    sentinelJedis1.sentinelMonitor(wrongMasterName,
+			    "127.0.0.1", master.getPort(), 2);
+		} catch (InterruptedException e) {
+		    e.printStackTrace();
+		}
+
+	    }
+	}).start();
+
+	JedisSentinelPool pool = new JedisSentinelPool(wrongMasterName,
+		sentinels);
+	pool.destroy();
+	sentinelJedis1.sentinelRemove(wrongMasterName);
+    }
+
+    
     @Test
     public void checkCloseableConnections() throws Exception {
 	GenericObjectPoolConfig config = new GenericObjectPoolConfig();
@@ -197,4 +222,4 @@ public class JedisSentinelPoolTest extends JedisTestBase {
 	}
     }
     
-}
+}
\ No newline at end of file