diff --git a/1. Grid files/@gridFile/gridFile.m b/1. Grid files/@gridFile/gridFile.m
index ab7d91f3..3355e5cb 100644
--- a/1. Grid files/@gridFile/gridFile.m	
+++ b/1. Grid files/@gridFile/gridFile.m	
@@ -26,7 +26,7 @@
     
     % Preallocation constants for source properties
     properties (Constant, Hidden)
-        preSource = 100;
+        preSource = 500;
         prePathChar = 500;
         preFileChar = 200;
         preVarChar = 50;