diff --git a/Source/MMRecord/MMRecordMarshaler.m b/Source/MMRecord/MMRecordMarshaler.m
index db13508..8e790fe 100644
--- a/Source/MMRecord/MMRecordMarshaler.m
+++ b/Source/MMRecord/MMRecordMarshaler.m
@@ -71,7 +71,7 @@ + (void)setValue:(id)value
         onRecord:(MMRecord *)record
        attribute:(NSAttributeDescription *)attribute
    dateFormatter:(NSDateFormatter *)dateFormatter {
-    if (value == nil) {
+    if (value == nil || value == [NSNull null]) {
         return;
     }