diff --git a/lib/adapters/postgres.js b/lib/adapters/postgres.js
index f1269329..8f713558 100644
--- a/lib/adapters/postgres.js
+++ b/lib/adapters/postgres.js
@@ -354,7 +354,7 @@ function getColumnsToAdd(model, actualFields){
 function addPropertyToActual(model, propName){
     var self = this;
     var p = self._models[model].properties[propName];
-    sqlCommand = 'ADD COLUMN "' + propName + '" ' + datatype(p) + " " + (propertyCanBeNull.call(self, model, propName) ? "" : " NOT NULL");
+    var sqlCommand = 'ADD COLUMN "' + propName + '" ' + datatype(p) + " " + (propertyCanBeNull.call(self, model, propName) ? "" : " NOT NULL");
     return sqlCommand;
 };