diff --git a/api/src/consts.rs b/api/src/consts.rs
index 5973d52..4341a97 100644
--- a/api/src/consts.rs
+++ b/api/src/consts.rs
@@ -58,6 +58,9 @@ pub const MINT_ADDRESS: Pubkey = pubkey!("ESovLnpNMatjLDcStPtuZvidiufBdoyoEGr76o
 pub const TREASURY_ADDRESS: Pubkey =
     Pubkey::new_from_array(ed25519::derive_program_address(&[TREASURY], &PROGRAM_ID).0);
 
+/// The address of the treasury account.
+pub const TREASURY_BUMP: u8 = ed25519::derive_program_address(&[TREASURY], &PROGRAM_ID).1;
+
 /// Denominator for protocol fee calculations.
 pub const FEE_RATE_BPS: u64 = 100;
 
diff --git a/program/src/mine.rs b/program/src/mine.rs
index dff6d7d..d518a08 100644
--- a/program/src/mine.rs
+++ b/program/src/mine.rs
@@ -131,13 +131,14 @@ pub fn process_mine(accounts: &[AccountInfo<'_>], data: &[u8]) -> ProgramResult
         miner.total_rewards += reward_amount;
 
         // Mint to recipient.
-        mint_to_signed(
+        mint_to_signed_with_bump(
             mint_ore_info,
             recipient_info,
             treasury_info,
             token_program,
             reward_amount,
             &[TREASURY],
+            TREASURY_BUMP,
         )?;
 
         // Emit event.