diff --git a/noir-projects/aztec-nr/aztec/src/state_vars/shared_mutable/test.nr b/noir-projects/aztec-nr/aztec/src/state_vars/shared_mutable/test.nr
index d4d5a8f143d..a3d0ccf6d46 100644
--- a/noir-projects/aztec-nr/aztec/src/state_vars/shared_mutable/test.nr
+++ b/noir-projects/aztec-nr/aztec/src/state_vars/shared_mutable/test.nr
@@ -54,7 +54,7 @@ unconstrained fn test_get_scheduled_value_in_public() {
 
     let (scheduled, block_of_change) = state_var.get_scheduled_value();
     assert_eq(scheduled, new_value);
-    assert_eq(block_of_change, env.block_number() + TEST_INITIAL_DELAY);
+    assert_eq(block_of_change, env.block_number() + 1 + TEST_INITIAL_DELAY);
 }
 
 #[test]
@@ -120,7 +120,7 @@ unconstrained fn test_get_scheduled_delay_in_public() {
     let (scheduled, block_of_change) = state_var.get_scheduled_delay();
     assert_eq(scheduled, new_delay);
     // The new delay is smaller, therefore we need to wait for the difference between current and new
-    assert_eq(block_of_change, env.block_number() + TEST_INITIAL_DELAY - new_delay);
+    assert_eq(block_of_change, env.block_number() + 1 + TEST_INITIAL_DELAY - new_delay);
 }
 
 #[test]
diff --git a/noir-projects/aztec-nr/aztec/src/test/helpers/test_environment.nr b/noir-projects/aztec-nr/aztec/src/test/helpers/test_environment.nr
index eba711b9f5b..5f315b3ba08 100644
--- a/noir-projects/aztec-nr/aztec/src/test/helpers/test_environment.nr
+++ b/noir-projects/aztec-nr/aztec/src/test/helpers/test_environment.nr
@@ -22,7 +22,7 @@ impl TestEnvironment {
     }
 
     pub unconstrained fn block_number(_self: Self) -> u32 {
-        get_block_number()
+        get_block_number() - 1
     }
 
     pub unconstrained fn contract_address(_self: Self) -> AztecAddress {
diff --git a/noir-projects/noir-contracts/contracts/router_contract/src/test.nr b/noir-projects/noir-contracts/contracts/router_contract/src/test.nr
index 300b958e36d..58d67b2d238 100644
--- a/noir-projects/noir-contracts/contracts/router_contract/src/test.nr
+++ b/noir-projects/noir-contracts/contracts/router_contract/src/test.nr
@@ -14,7 +14,7 @@ unconstrained fn test_check_block_number() {
 
     // First we sanity-check that current block number is as expected
     let current_block_number = env.block_number();
-    assert(current_block_number == 10, "Expected block number to be 10");
+    assert(current_block_number == 9, "Expected block number to be 9");
 
     // We test just one success case and 1 failure case in this test as the rest is tested in the comparator unit tests
     router.check_block_number(Comparator.LT, 11).call(&mut env.private());
@@ -32,7 +32,7 @@ unconstrained fn test_fail_check_block_number() {
 
     // First we sanity-check that current block number is as expected
     let current_block_number = env.block_number();
-    assert(current_block_number == 10, "Expected block number to be 10");
+    assert(current_block_number == 9, "Expected block number to be 9");
 
     router.check_block_number(Comparator.LT, 5).call(&mut env.private());
 }