diff --git a/MacPass/KPKEntry+MPCustomAttributeProperties.m b/MacPass/KPKEntry+MPCustomAttributeProperties.m
index fabc6d6b..5ec7f4fe 100644
--- a/MacPass/KPKEntry+MPCustomAttributeProperties.m
+++ b/MacPass/KPKEntry+MPCustomAttributeProperties.m
@@ -23,7 +23,7 @@
 #import "KPKEntry+MPCustomAttributeProperties.h"
 #import <objc/runtime.h>
 
-NSString *const MPCustomAttributePropertyPrefix = @"valueForCustomAttribute";
+NSString *const MPCustomAttributePropertyPrefix = @"mp_valueForCustomAttribute";
 
 @implementation KPKEntry (MPCustomAttributeProperties)