diff --git a/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_inbox.ml b/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_inbox.ml
index 8a2949582cbd652a0b74252a6f6efd4fc7e1f28c..727a608306e8f7b1a82890af26aa14650a5576a8 100644
--- a/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_inbox.ml
+++ b/src/proto_alpha/lib_protocol/test/unit/test_sc_rollup_inbox.ml
@@ -905,6 +905,7 @@ let tests =
          result"
       (let open QCheck2.Gen in
       let* origination_level = small_nat in
+      let origination_level = succ origination_level in
       let* offset = small_nat in
       let snapshot_level = origination_level + offset + 1 in
       return (origination_level, snapshot_level))