diff --git a/sub/xpat/src/scanner.rs b/sub/xpat/src/scanner.rs
index 6623a63..28c8408 100644
--- a/sub/xpat/src/scanner.rs
+++ b/sub/xpat/src/scanner.rs
@@ -369,7 +369,10 @@ pub fn scan_for_aob<Binary: Scannable + ?Sized>(
             }
 
             // start scanning the next chunk
-            let naddr = naddr - aob.len();
+
+            // TODO When i originally wrote this I put a subtraction
+            //      I don't remember why but I think it should be an addition
+            let naddr = naddr + aob.len();
             debug_assert!(naddr > address, "debug assertion failed: {naddr:X} > {address:X}");
             address = naddr;
         } else {