diff --git a/lib/rex/machparsey/mach.rb b/lib/rex/machparsey/mach.rb
index b377e39118..8167886e9c 100644
--- a/lib/rex/machparsey/mach.rb
+++ b/lib/rex/machparsey/mach.rb
@@ -88,7 +88,7 @@ class Mach < MachBase
 	end
 
 	def read(offset, len)
-		isource.read(offset, len)
+		isource.read(fat_offset + offset, len)
 	end
 
 	def index(*args)