1 files changed, 3 insertions, 1 deletions
diff --git a/Source/SPXMLExporter.m b/Source/SPXMLExporter.m
index 8ff99e0d..8393b937 100644
--- a/Source/SPXMLExporter.m
+++ b/Source/SPXMLExporter.m
@@ -258,7 +258,9 @@
 					
 					[xmlItem setString:[NSString stringWithString:dataConversionString]];
 					[dataConversionString release];
-				} 
+				}
+
+				// Check for null value using a pointer comparison; as [NSNull null] is a singleton this works correctly.
 				else if (data == [NSNull null]) {
 					dataIsNULL = YES;