diff --git a/sim/src/main.rs b/sim/src/main.rs
index 9e38172..713bb52 100644
--- a/sim/src/main.rs
+++ b/sim/src/main.rs
@@ -750,7 +750,7 @@
 
     // Generate a boot header.  Note that the size doesn't include the header.
     let header = ImageHeader {
-        magic: 0x96f3b83c,
+        magic: 0x96f3b83d,
         tlv_size: tlv.get_size(),
         _pad1: 0,
         hdr_size: 32,