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 d68d4412d97a..d4d5a8f143d4 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
@@ -1,12 +1,12 @@
 use crate::{
     context::{PrivateContext, PublicContext, UnconstrainedContext},
     state_vars::shared_mutable::SharedMutable,
-    test::helpers::test_environment::TestEnvironment,
+    test::{helpers::test_environment::TestEnvironment, mocks::mock_struct::MockStruct},
 };
 
 use dep::std::mem::zeroed;
 
-global new_value: Field = 17;
+global new_value: MockStruct = MockStruct { a: 17, b: 42 };
 
 global new_delay: u32 = 20;
 
@@ -20,20 +20,20 @@ unconstrained fn setup() -> TestEnvironment {
 
 unconstrained fn in_public(
     env: TestEnvironment,
-) -> SharedMutable<Field, TEST_INITIAL_DELAY, &mut PublicContext> {
+) -> SharedMutable<MockStruct, TEST_INITIAL_DELAY, &mut PublicContext> {
     SharedMutable::new(&mut env.public(), storage_slot)
 }
 
 unconstrained fn in_private(
     env: &mut TestEnvironment,
     historical_block_number: u32,
-) -> SharedMutable<Field, TEST_INITIAL_DELAY, &mut PrivateContext> {
+) -> SharedMutable<MockStruct, TEST_INITIAL_DELAY, &mut PrivateContext> {
     SharedMutable::new(&mut env.private_at(historical_block_number), storage_slot)
 }
 
 unconstrained fn in_unconstrained(
     env: TestEnvironment,
-) -> SharedMutable<Field, TEST_INITIAL_DELAY, UnconstrainedContext> {
+) -> SharedMutable<MockStruct, TEST_INITIAL_DELAY, UnconstrainedContext> {
     SharedMutable::new(env.unkonstrained(), storage_slot)
 }
 
@@ -194,7 +194,7 @@ unconstrained fn test_get_current_value_in_private_before_change() {
     let schedule_block_number = env.block_number();
 
     let private_state_var = in_private(&mut env, schedule_block_number);
-    assert_eq(private_state_var.get_current_value(), 0);
+    assert_eq(private_state_var.get_current_value(), MockStruct::empty());
     assert_eq(private_state_var.context.max_block_number.unwrap(), block_of_change - 1);
 }
 
@@ -211,7 +211,7 @@ unconstrained fn test_get_current_value_in_private_immediately_before_change() {
 
     // Note that this transaction would never be valid since the max block number is the same as the historical block
     // used to built the proof, i.e. in the past.
-    assert_eq(private_state_var.get_current_value(), 0);
+    assert_eq(private_state_var.get_current_value(), MockStruct::empty());
     assert_eq(private_state_var.context.max_block_number.unwrap(), block_of_change - 1);
 }
 
diff --git a/noir-projects/aztec-nr/aztec/src/test/mocks/mock_struct.nr b/noir-projects/aztec-nr/aztec/src/test/mocks/mock_struct.nr
index eb252267fc36..e9dd02c811d8 100644
--- a/noir-projects/aztec-nr/aztec/src/test/mocks/mock_struct.nr
+++ b/noir-projects/aztec-nr/aztec/src/test/mocks/mock_struct.nr
@@ -1,4 +1,4 @@
-use dep::protocol_types::traits::{Deserialize, Packable, Serialize};
+use dep::protocol_types::traits::{Deserialize, Empty, Packable, Serialize};
 
 pub struct MockStruct {
     pub a: Field,
@@ -17,6 +17,12 @@ impl Eq for MockStruct {
     }
 }
 
+impl Empty for MockStruct {
+    fn empty() -> Self {
+        Self { a: 0, b: 0 }
+    }
+}
+
 impl Serialize<2> for MockStruct {
     fn serialize(self) -> [Field; 2] {
         [self.a, self.b]