diff --git a/pom.xml b/pom.xml
index 1f0d73253d..aa5b24d826 100644
--- a/pom.xml
+++ b/pom.xml
@@ -65,6 +65,11 @@
 			<type>jar</type>
 			<scope>compile</scope>
 		</dependency>
+		<dependency>
+			<groupId>com.google.code.findbugs</groupId>
+			<artifactId>jsr305</artifactId>
+			<version>3.0.2</version>
+		</dependency>
 
 		<dependency>
 			<groupId>junit</groupId>
diff --git a/src/main/java/redis/clients/jedis/JedisClusterCommand.java b/src/main/java/redis/clients/jedis/JedisClusterCommand.java
index 0aa1055df4..f4359a5a54 100644
--- a/src/main/java/redis/clients/jedis/JedisClusterCommand.java
+++ b/src/main/java/redis/clients/jedis/JedisClusterCommand.java
@@ -1,5 +1,7 @@
 package redis.clients.jedis;
 
+import javax.annotation.Nullable;
+
 import redis.clients.jedis.exceptions.JedisAskDataException;
 import redis.clients.jedis.exceptions.JedisClusterMaxAttemptsException;
 import redis.clients.jedis.exceptions.JedisClusterOperationException;
@@ -137,7 +139,7 @@ private T runWithRetries(final int slot, int attempts, boolean tryRandomNode, Je
     }
   }
 
-  private void releaseConnection(Jedis connection) {
+  private void releaseConnection(@Nullable Jedis connection) {
     if (connection != null) {
       connection.close();
     }