diff --git a/lib/utils.js b/lib/utils.js
index ae7bde0..b9d64de 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,7 +1,7 @@
 
 function unifyProperties(source, dest) {
   for (var p in source) {
-    eval("dest."+p+"=source."+p)
+    dest[p] = source[p];
    }	
 }
 
@@ -12,4 +12,4 @@ function getTypeName(obj) {
 }
 
 exports.unifyProperties = unifyProperties
-exports.getTypeName = getTypeName
\ No newline at end of file
+exports.getTypeName = getTypeName