diff --git a/src/main/java/redis/clients/jedis/BinaryClient.java b/src/main/java/redis/clients/jedis/BinaryClient.java
index b1aaa96..9b2cce6 100644
--- a/src/main/java/redis/clients/jedis/BinaryClient.java
+++ b/src/main/java/redis/clients/jedis/BinaryClient.java
@@ -320,7 +320,7 @@ public class BinaryClient extends Connection {
     public void sadd(final byte[] key, final byte[]... members) {
 	sendCommand(SADD, joinParameters(key, members));
     }
-    
+
     public void smembers(final byte[] key) {
 	sendCommand(SMEMBERS, key);
     }
diff --git a/src/main/java/redis/clients/jedis/Client.java b/src/main/java/redis/clients/jedis/Client.java
index f6b9529..64f6f5c 100644
--- a/src/main/java/redis/clients/jedis/Client.java
+++ b/src/main/java/redis/clients/jedis/Client.java
@@ -951,16 +951,4 @@ public class Client extends BinaryClient implements Commands {
 	cluster(Protocol.CLUSTER_SETSLOT, String.valueOf(slot),
 		Protocol.CLUSTER_SETSLOT_IMPORTING, nodeId);
     }
-
-    public void pfadd(String key, final String... elements) {
-	pfadd(SafeEncoder.encode(key), SafeEncoder.encodeMany(elements));
-    }
-
-    public void pfcount(final String key) {
-	pfcount(SafeEncoder.encode(key));
-    }
-
-    public void pfmerge(final String destkey, final String... sourcekeys) {
-	pfmerge(SafeEncoder.encode(destkey), SafeEncoder.encodeMany(sourcekeys));
-    }
 }
diff --git a/src/main/java/redis/clients/jedis/JedisSentinelPool.java b/src/main/java/redis/clients/jedis/JedisSentinelPool.java
index 4fe5433..224ca99 100644
--- a/src/main/java/redis/clients/jedis/JedisSentinelPool.java
+++ b/src/main/java/redis/clients/jedis/JedisSentinelPool.java
@@ -75,12 +75,16 @@ public class JedisSentinelPool extends Pool<Jedis> {
     }
 
     public void returnBrokenResource(final Jedis resource) {
-	returnBrokenResourceObject(resource);
+	if (resource != null) {
+	    returnBrokenResourceObject(resource);
+	}
     }
 
     public void returnResource(final Jedis resource) {
-	resource.resetState();
-	returnResourceObject(resource);
+	if (resource != null) {
+	    resource.resetState();
+	    returnResourceObject(resource);
+	}
     }
 
     private volatile HostAndPort currentHostMaster;
diff --git a/src/main/java/redis/clients/jedis/Protocol.java b/src/main/java/redis/clients/jedis/Protocol.java
index 5ceccaa..681bc56 100644
--- a/src/main/java/redis/clients/jedis/Protocol.java
+++ b/src/main/java/redis/clients/jedis/Protocol.java
@@ -208,7 +208,7 @@ public final class Protocol {
     }
 
     public static enum Command {
-	PING, SET, GET, QUIT, EXISTS, DEL, TYPE, FLUSHDB, KEYS, RANDOMKEY, RENAME, RENAMENX, RENAMEX, DBSIZE, EXPIRE, EXPIREAT, TTL, SELECT, MOVE, FLUSHALL, GETSET, MGET, SETNX, SETEX, MSET, MSETNX, DECRBY, DECR, INCRBY, INCR, APPEND, SUBSTR, HSET, HGET, HSETNX, HMSET, HMGET, HINCRBY, HEXISTS, HDEL, HLEN, HKEYS, HVALS, HGETALL, RPUSH, LPUSH, LLEN, LRANGE, LTRIM, LINDEX, LSET, LREM, LPOP, RPOP, RPOPLPUSH, SADD, SMEMBERS, SREM, SPOP, SMOVE, SCARD, SISMEMBER, SINTER, SINTERSTORE, SUNION, SUNIONSTORE, SDIFF, SDIFFSTORE, SRANDMEMBER, ZADD, ZRANGE, ZREM, ZINCRBY, ZRANK, ZREVRANK, ZREVRANGE, ZCARD, ZSCORE, MULTI, DISCARD, EXEC, WATCH, UNWATCH, SORT, BLPOP, BRPOP, AUTH, SUBSCRIBE, PUBLISH, UNSUBSCRIBE, PSUBSCRIBE, PUNSUBSCRIBE, PUBSUB, ZCOUNT, ZRANGEBYSCORE, ZREVRANGEBYSCORE, ZREMRANGEBYRANK, ZREMRANGEBYSCORE, ZUNIONSTORE, ZINTERSTORE, SAVE, BGSAVE, BGREWRITEAOF, LASTSAVE, SHUTDOWN, INFO, MONITOR, SLAVEOF, CONFIG, STRLEN, SYNC, LPUSHX, PERSIST, RPUSHX, ECHO, LINSERT, DEBUG, BRPOPLPUSH, SETBIT, GETBIT, SETRANGE, GETRANGE, EVAL, EVALSHA, SCRIPT, SLOWLOG, OBJECT, BITCOUNT, BITOP, SENTINEL, DUMP, RESTORE, PEXPIRE, PEXPIREAT, PTTL, INCRBYFLOAT, PSETEX, CLIENT, TIME, MIGRATE, HINCRBYFLOAT, SCAN, HSCAN, SSCAN, ZSCAN, WAIT, CLUSTER, ASKING, PFADD, PFCOUNT, PFMERGE;
+	PING, SET, GET, QUIT, EXISTS, DEL, TYPE, FLUSHDB, KEYS, RANDOMKEY, RENAME, RENAMENX, RENAMEX, DBSIZE, EXPIRE, EXPIREAT, TTL, SELECT, MOVE, FLUSHALL, GETSET, MGET, SETNX, SETEX, MSET, MSETNX, DECRBY, DECR, INCRBY, INCR, APPEND, SUBSTR, HSET, HGET, HSETNX, HMSET, HMGET, HINCRBY, HEXISTS, HDEL, HLEN, HKEYS, HVALS, HGETALL, RPUSH, LPUSH, LLEN, LRANGE, LTRIM, LINDEX, LSET, LREM, LPOP, RPOP, RPOPLPUSH, SADD, SMEMBERS, SREM, SPOP, SMOVE, SCARD, SISMEMBER, SINTER, SINTERSTORE, SUNION, SUNIONSTORE, SDIFF, SDIFFSTORE, SRANDMEMBER, ZADD, ZRANGE, ZREM, ZINCRBY, ZRANK, ZREVRANK, ZREVRANGE, ZCARD, ZSCORE, MULTI, DISCARD, EXEC, WATCH, UNWATCH, SORT, BLPOP, BRPOP, AUTH, SUBSCRIBE, PUBLISH, UNSUBSCRIBE, PSUBSCRIBE, PUNSUBSCRIBE, PUBSUB, ZCOUNT, ZRANGEBYSCORE, ZREVRANGEBYSCORE, ZREMRANGEBYRANK, ZREMRANGEBYSCORE, ZUNIONSTORE, ZINTERSTORE, SAVE, BGSAVE, BGREWRITEAOF, LASTSAVE, SHUTDOWN, INFO, MONITOR, SLAVEOF, CONFIG, STRLEN, SYNC, LPUSHX, PERSIST, RPUSHX, ECHO, LINSERT, DEBUG, BRPOPLPUSH, SETBIT, GETBIT, SETRANGE, GETRANGE, EVAL, EVALSHA, SCRIPT, SLOWLOG, OBJECT, BITCOUNT, BITOP, SENTINEL, DUMP, RESTORE, PEXPIRE, PEXPIREAT, PTTL, INCRBYFLOAT, PSETEX, CLIENT, TIME, MIGRATE, HINCRBYFLOAT, SCAN, HSCAN, SSCAN, ZSCAN, WAIT, CLUSTER, ASKING;
 
 	public final byte[] raw;
 
diff --git a/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java b/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java
index c8df9c5..1dd2896 100644
--- a/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java
+++ b/src/test/java/redis/clients/jedis/tests/JedisSentinelPoolTest.java
@@ -80,6 +80,32 @@ public class JedisSentinelPoolTest extends JedisTestBase {
 	}
     }
 
+    @Test
+    public void returnResourceWithNullResource() {
+	GenericObjectPoolConfig config = new GenericObjectPoolConfig();
+	config.setMaxTotal(1);
+	config.setBlockWhenExhausted(false);
+	JedisSentinelPool pool = new JedisSentinelPool(MASTER_NAME, sentinels,
+		config, 1000, "foobared", 2);
+
+	Jedis nullJedis = null;
+	pool.returnResource(nullJedis);
+	pool.destroy();
+    }
+
+    @Test
+    public void returnBrokenResourceWithNullResource() {
+	GenericObjectPoolConfig config = new GenericObjectPoolConfig();
+	config.setMaxTotal(1);
+	config.setBlockWhenExhausted(false);
+	JedisSentinelPool pool = new JedisSentinelPool(MASTER_NAME, sentinels,
+		config, 1000, "foobared", 2);
+
+	Jedis nullJedis = null;
+	pool.returnBrokenResource(nullJedis);
+	pool.destroy();
+    }
+
     private void forceFailover(JedisSentinelPool pool)
 	    throws InterruptedException {
 	HostAndPort oldMaster = pool.getCurrentHostMaster();