diff --git a/crates/aldabra-mcp/src/tools.rs b/crates/aldabra-mcp/src/tools.rs
index bf67a14..a6ac1ec 100644
--- a/crates/aldabra-mcp/src/tools.rs
+++ b/crates/aldabra-mcp/src/tools.rs
@@ -2712,10 +2712,12 @@ impl WalletService {
         // a vote-too-early call (tip < voting_start) would burn fees on a
         // "too early or invalid" script error. Catch lb-vs-voting_start
         // here too.
-        let voting_start_check = target.datum.starting_time
-            + target.datum.timing_config.draft_time;
+        //
+        // Read from prop_datum (target.datum was moved to prop_datum at L2636).
+        let voting_start_check = prop_datum.starting_time
+            + prop_datum.timing_config.draft_time;
         let voting_end_check = voting_start_check
-            + target.datum.timing_config.voting_time;
+            + prop_datum.timing_config.voting_time;
         if tx_lower_ms < voting_start_check {
             return Err(format!(
                 "tx lower bound {tx_lower_ms} ms is before voting window start {voting_start_check} ms \