diff --git a/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml b/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml
index cedfd122e072fb7e8290fe73b19cd58a13de4651..09c0b877bf930ebb99447e58c75b2e38729c7e54 100644
--- a/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml
+++ b/src/proto_alpha/lib_protocol/sc_rollup_wasm.ml
@@ -146,7 +146,7 @@ module V2_0_0 = struct
 
     let name = "wasm_2_0_0"
 
-    let parse_boot_sector s = Some s
+    let parse_boot_sector s = Hex.to_string @@ `Hex s
 
     let pp_boot_sector fmt s = Format.fprintf fmt "%s" s