--- ServerPreparedStatement.java	2014-10-17 08:05:36.000000000 +0200
+++ src/com/mysql/jdbc/ServerPreparedStatement.java	2015-02-18 18:02:58.000000000 +0100
@@ -132,6 +132,7 @@
             this.isSet = false;
             this.value = null;
             this.isLongData = false;
+            this.isNull = false;
 
             this.longBinding = 0L;
             this.floatBinding = 0;
@@ -2169,10 +2170,10 @@
 
                     binding.value = TimeUtil.changeTimezone(this.connection, sessionCalendar, targetCalendar, x, tz, this.connection.getServerTimezoneTZ(),
                             rollForward);
-
-                    binding.isNull = false;
-                    binding.isLongData = false;
                 }
+                
+                binding.isNull = false;
+                binding.isLongData = false;
             }
         }
     }