diff --git a/vm/actor/src/builtin/miner/state.rs b/vm/actor/src/builtin/miner/state.rs
index 2b4989713e7a..7ad119c98881 100644
--- a/vm/actor/src/builtin/miner/state.rs
+++ b/vm/actor/src/builtin/miner/state.rs
@@ -1153,6 +1153,11 @@ impl State {
         let precommitted =
             make_map_with_root_and_bitwidth(&self.pre_committed_sectors, store, HAMT_BIT_WIDTH)?;
         for sector_no in sector_nos.iter() {
+            if sector_no > fil_types::MAX_SECTOR_NUMBER as usize {
+                return Err(
+                    actor_error!(ErrIllegalArgument, "sector number greater than maximum").into(),
+                );
+            }
             let info: &SectorPreCommitOnChainInfo =
                 precommitted
                     .get(&u64_key(sector_no as u64))?