diff --git a/finance/lending/anchor-v1/programs/lending/tests/common/mod.rs b/finance/lending/anchor-v1/programs/lending/tests/common/mod.rs
index dcf51deb7..f55eee231 100644
--- a/finance/lending/anchor-v1/programs/lending/tests/common/mod.rs
+++ b/finance/lending/anchor-v1/programs/lending/tests/common/mod.rs
@@ -733,11 +733,11 @@ impl Env {
 /// 5% bonus, 50% close factor, 10% reserve factor (protocol's cut of interest),
 /// kink at 80% utilization, 2%/20%/150% APR curve.
 /// Slots in a year, which is how a reserve turns an APR into a per-slot rate.
-/// 78_840_000 is a 400ms slot: 2.5 slots/second * 60 * 60 * 24 * 365. It is a
+/// 157_680_000 is a 200ms slot: 5 slots/second * 60 * 60 * 24 * 365. It is a
 /// test fixture, not a law: a deployment reads the slot time off the cluster it
 /// points at (two `getBlockTime` results a known number of slots apart) and
 /// updates the reserve when the protocol changes it.
-pub const SLOTS_PER_YEAR: u64 = 78_840_000;
+pub const SLOTS_PER_YEAR: u64 = 157_680_000;
 
 pub fn default_config() -> ReserveConfig {
     ReserveConfig {
diff --git a/finance/lending/anchor-v1/programs/lending/tests/test_interest.rs b/finance/lending/anchor-v1/programs/lending/tests/test_interest.rs
index 15d6be350..67b93c0b1 100644
--- a/finance/lending/anchor-v1/programs/lending/tests/test_interest.rs
+++ b/finance/lending/anchor-v1/programs/lending/tests/test_interest.rs
@@ -87,7 +87,7 @@ fn protocol_fees_accrue_and_owner_can_collect() {
     // No interest has accrued yet, so no fees.
     assert_eq!(env.reserve(&borrow).accumulated_protocol_fees, 0);
 
-    env.warp_slots(7_884_000);
+    env.warp_slots(SLOTS_PER_YEAR / 10);
     env.refresh_reserve_only(&borrower, &borrow);
 
     // Fees accrued, and they are ~10% (the reserve factor) of total interest.
diff --git a/finance/lending/anchor-v1/programs/lending/tests/test_rounding.rs b/finance/lending/anchor-v1/programs/lending/tests/test_rounding.rs
index 7cebb803c..1c0a0aa97 100644
--- a/finance/lending/anchor-v1/programs/lending/tests/test_rounding.rs
+++ b/finance/lending/anchor-v1/programs/lending/tests/test_rounding.rs
@@ -1,6 +1,6 @@
 mod common;
 
-use common::{ata, default_config, dollars, Env};
+use common::{ata, default_config, dollars, Env, SLOTS_PER_YEAR};
 use solana_signer::Signer;
 
 /// After interest makes the pool worth more than its share supply, a deposit so
@@ -26,7 +26,7 @@ fn deposit_that_would_mint_zero_shares_is_rejected() {
         .unwrap();
 
     // Accrue enough interest that total liquidity exceeds the share supply.
-    env.warp_slots(7_884_000);
+    env.warp_slots(SLOTS_PER_YEAR / 10);
     env.refresh_reserve_only(&borrower, &borrow);
     assert!(env.reserve(&borrow).borrow_accumulation_factor > lending::constants::FIXED_POINT_SCALE);
 
diff --git a/finance/lending/anchor/programs/lending/tests/common/mod.rs b/finance/lending/anchor/programs/lending/tests/common/mod.rs
index ce490c299..c60092c0c 100644
--- a/finance/lending/anchor/programs/lending/tests/common/mod.rs
+++ b/finance/lending/anchor/programs/lending/tests/common/mod.rs
@@ -798,11 +798,11 @@ impl Env {
 /// 5% bonus, 50% close factor, 10% reserve factor (protocol's cut of interest),
 /// kink at 80% utilization, 2%/20%/150% APR curve.
 /// Slots in a year, which is how a reserve turns an APR into a per-slot rate.
-/// 78_840_000 is a 400ms slot: 2.5 slots/second * 60 * 60 * 24 * 365. It is a
+/// 157_680_000 is a 200ms slot: 5 slots/second * 60 * 60 * 24 * 365. It is a
 /// test fixture, not a law: a deployment reads the slot time off the cluster it
 /// points at (two `getBlockTime` results a known number of slots apart) and
 /// updates the reserve when the protocol changes it.
-pub const SLOTS_PER_YEAR: u64 = 78_840_000;
+pub const SLOTS_PER_YEAR: u64 = 157_680_000;
 
 pub fn default_config() -> ReserveConfig {
     ReserveConfig {
diff --git a/finance/lending/anchor/programs/lending/tests/test_interest.rs b/finance/lending/anchor/programs/lending/tests/test_interest.rs
index 864c9423f..b1330e86f 100644
--- a/finance/lending/anchor/programs/lending/tests/test_interest.rs
+++ b/finance/lending/anchor/programs/lending/tests/test_interest.rs
@@ -104,7 +104,7 @@ fn protocol_fees_accrue_and_owner_can_collect() {
     // No interest has accrued yet, so no fees.
     assert_eq!(env.reserve(&borrow).accumulated_protocol_fees, 0);
 
-    env.warp_slots(7_884_000);
+    env.warp_slots(SLOTS_PER_YEAR / 10);
     env.refresh_reserve_only(&borrower, &borrow);
 
     // Fees accrued, and they are ~10% (the reserve factor) of total interest.
diff --git a/finance/lending/anchor/programs/lending/tests/test_rounding.rs b/finance/lending/anchor/programs/lending/tests/test_rounding.rs
index f135e4dbe..899537db3 100644
--- a/finance/lending/anchor/programs/lending/tests/test_rounding.rs
+++ b/finance/lending/anchor/programs/lending/tests/test_rounding.rs
@@ -3,7 +3,7 @@ mod common;
 use anchor_v2_testing::Signer;
 use lending::errors::LendingError;
 
-use common::{ata, default_config, dollars, Env};
+use common::{ata, default_config, dollars, Env, SLOTS_PER_YEAR};
 
 /// After interest makes the pool worth more than its share supply, a deposit so
 /// small it would mint zero shares is rejected rather than silently giving the
@@ -35,7 +35,7 @@ fn deposit_that_would_mint_zero_shares_is_rejected() {
     .unwrap();
 
     // Accrue enough interest that total liquidity exceeds the share supply.
-    env.warp_slots(7_884_000);
+    env.warp_slots(SLOTS_PER_YEAR / 10);
     env.refresh_reserve_only(&borrower, &borrow);
     assert!(
         env.reserve(&borrow).borrow_accumulation_factor > lending::constants::FIXED_POINT_SCALE
diff --git a/finance/lending/quasar/src/tests.rs b/finance/lending/quasar/src/tests.rs
index 4831fae46..a2decaa93 100644
--- a/finance/lending/quasar/src/tests.rs
+++ b/finance/lending/quasar/src/tests.rs
@@ -30,10 +30,10 @@ const DECIMALS: u8 = 6;
 const UNIT: u64 = 1_000_000; // 1 token at 6 decimals
 
 /// Slots in a year, which is how a reserve turns an APR into a per-slot rate.
-/// 78_840_000 is a 400ms slot: 2.5 slots/second * 60 * 60 * 24 * 365. It is a
+/// 157_680_000 is a 200ms slot: 5 slots/second * 60 * 60 * 24 * 365. It is a
 /// fixture, not a law: a deployment reads the slot time off the cluster it
 /// points at and calls `update_slots_per_year` when the protocol changes it.
-const SLOTS_PER_YEAR: u64 = 78_840_000;
+const SLOTS_PER_YEAR: u64 = 157_680_000;
 
 // Deterministic addresses.
 const OWNER: Pubkey = Pubkey::new_from_array([1; 32]);
@@ -766,7 +766,7 @@ mod slot_warp {
         world.borrow(500 * UNIT).assert_success();
 
         // ~0.1 year passes; re-publish prices so feeds stay fresh.
-        world.svm.sysvars.warp_to_slot(7_884_000);
+        world.svm.sysvars.warp_to_slot(super::SLOTS_PER_YEAR / 10);
         world.set_price(COLLATERAL_MINT, world.collateral_price, dollars(1));
         world.set_price(BORROW_MINT, world.borrow_price, dollars(1));
 
@@ -821,7 +821,7 @@ mod slot_warp {
         world.borrow(500 * UNIT).assert_success();
 
         // First window, at the figure the reserve was created with.
-        let window = 7_884_000;
+        let window = super::SLOTS_PER_YEAR / 10;
         let start = world.svm.sysvars.clock.slot;
         world.svm.sysvars.warp_to_slot(start + window);
         let first = balance(&world.collect_borrow_fees(), OWNER_BORROW);
@@ -854,7 +854,7 @@ mod slot_warp {
 
         // ~0.1 year passes; interest accrues, and the reserve factor (10%)
         // sets some of it aside for the market owner.
-        world.svm.sysvars.warp_to_slot(7_884_000);
+        world.svm.sysvars.warp_to_slot(super::SLOTS_PER_YEAR / 10);
 
         let result = world.collect_borrow_fees();
         result.assert_success();