diff --git a/tig-protocol/src/contracts/players.rs b/tig-protocol/src/contracts/players.rs
index 652d1e35..7991a8c0 100644
--- a/tig-protocol/src/contracts/players.rs
+++ b/tig-protocol/src/contracts/players.rs
@@ -212,8 +212,8 @@ pub async fn set_vote<T: Context>(
         .get_breakthrough_state(&breakthrough_id)
         .await
         .ok_or_else(|| anyhow!("Invalid breakthrough '{}'", breakthrough_id))?;
-    if breakthrough_state.round_pushed > latest_block_details.round
-        && latest_block_details.round >= breakthrough_state.round_votes_tallied
+    if latest_block_details.round < breakthrough_state.round_voting_starts
+        || latest_block_details.round >= breakthrough_state.round_votes_tallied
     {
         return Err(anyhow!("Cannot vote on breakthrough '{}'", breakthrough_id));
     }
diff --git a/tig-structs/src/config.rs b/tig-structs/src/config.rs
index 4da83dac..2c825636 100644
--- a/tig-structs/src/config.rs
+++ b/tig-structs/src/config.rs
@@ -23,6 +23,7 @@ serializable_struct_with_getters! {
     BreakthroughsConfig {
         bootstrap_address: String,
         min_percent_yes_votes: f64,
+        vote_start_delay: u32,
         vote_period: u32,
         min_lock_period_to_vote: u32,
         submission_fee: PreciseNumber,
diff --git a/tig-structs/src/core.rs b/tig-structs/src/core.rs
index 6b885642..553972c1 100644
--- a/tig-structs/src/core.rs
+++ b/tig-structs/src/core.rs
@@ -272,6 +272,7 @@ serializable_struct_with_getters! {
         block_confirmed: u32,
         round_submitted: u32,
         round_pushed: u32,
+        round_voting_starts: u32,
         round_votes_tallied: u32,
         votes_tally: HashMap<bool, PreciseNumber>,
         round_active: Option<u32>,