1 files changed, 4 insertions, 2 deletions
diff --git a/py/bc.c b/py/bc.c
index 7d0b13bd74..5625da8cf3 100644
--- a/py/bc.c
+++ b/py/bc.c
@@ -292,7 +292,8 @@ continue2:;
 #if MICROPY_PERSISTENT_CODE_LOAD || MICROPY_PERSISTENT_CODE_SAVE
 
 // The following table encodes the number of bytes that a specific opcode
-// takes up.  There are 3 special opcodes that always have an extra byte:
+// takes up.  There are 4 special opcodes that always have an extra byte:
+//     MP_BC_UNWIND_JUMP
 //     MP_BC_MAKE_CLOSURE
 //     MP_BC_MAKE_CLOSURE_DEFARGS
 //     MP_BC_RAISE_VARARGS
@@ -402,7 +403,8 @@ uint mp_opcode_format(const byte *ip, size_t *opcode_size, bool count_var_uint)
         ip += 3;
     } else {
         int extra_byte = (
-            *ip == MP_BC_RAISE_VARARGS
+            *ip == MP_BC_UNWIND_JUMP
+            || *ip == MP_BC_RAISE_VARARGS
             || *ip == MP_BC_MAKE_CLOSURE
             || *ip == MP_BC_MAKE_CLOSURE_DEFARGS
         );