diff --git a/packaging/fixheader.cs b/packaging/fixheader.cs
index ff643a199c..f4ef634390 100644
--- a/packaging/fixheader.cs
+++ b/packaging/fixheader.cs
@@ -29,6 +29,9 @@ namespace fixheader
 
 			data[corHeaderOffset + 16] |= 2;
 
+			// Set Flag "Application can handle large (>2GB) addresses (/LARGEADDRESSAWARE)"
+			data[peOffset + 4 + 18] |= 0x20;
+
 			File.WriteAllBytes(args[0], data);
 		}