diff --git a/DataTreeCore.cpp b/DataTreeCore.cpp
index 32d2fec..b02be4e 100644
--- a/DataTreeCore.cpp
+++ b/DataTreeCore.cpp
@@ -371,11 +371,11 @@ bool  CDataTree::SetValue( TDataMember * Member, EDataType Type, const char * Va
 
         // Check Length
         if (Len == -1) {
-            Len = strlen(Value)+1;
+            Len = strlen(Value);
         }
 
         // Create copy of value
-        NewValue = (char *)malloc( Len+1 );
+        NewValue = (char*)malloc( Len+1 );
         if (Value) {
             memcpy( NewValue, Value, Len );
         } else {