diff --git a/src/constance_test_suite/src/kernel_tests/basic.rs b/src/constance_test_suite/src/kernel_tests/basic.rs
index b0efd2550c..494f92f576 100644
--- a/src/constance_test_suite/src/kernel_tests/basic.rs
+++ b/src/constance_test_suite/src/kernel_tests/basic.rs
@@ -1,18 +1,21 @@
 //! Runs a task at startup.
 use constance::{kernel::Task, prelude::*};
+use core::marker::PhantomData;
 
 use super::Driver;
 
 pub struct App<System> {
-    task: Task<System>,
+    _phantom: PhantomData<System>,
 }
 
 impl<System: Kernel> App<System> {
     constance::configure! {
         pub const fn new<D: Driver<Self>>(_: &mut CfgBuilder<System>) -> Self {
-            let task = new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
+            new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
 
-            App { task }
+            App {
+                _phantom: PhantomData,
+            }
         }
     }
 }
diff --git a/src/constance_test_suite/src/kernel_tests/cpu_lock.rs b/src/constance_test_suite/src/kernel_tests/cpu_lock.rs
index 15aa175b88..7ca6b0e5bd 100644
--- a/src/constance_test_suite/src/kernel_tests/cpu_lock.rs
+++ b/src/constance_test_suite/src/kernel_tests/cpu_lock.rs
@@ -1,18 +1,21 @@
 //! Activates and deactivates CPU Lock.
 use constance::{kernel::Task, prelude::*};
+use core::marker::PhantomData;
 
 use super::Driver;
 
 pub struct App<System> {
-    task: Task<System>,
+    _phantom: PhantomData<System>,
 }
 
 impl<System: Kernel> App<System> {
     constance::configure! {
         pub const fn new<D: Driver<Self>>(_: &mut CfgBuilder<System>) -> Self {
-            let task = new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
+            new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
 
-            App { task }
+            App {
+                _phantom: PhantomData,
+            }
         }
     }
 }
diff --git a/src/constance_test_suite/src/kernel_tests/priority_boost.rs b/src/constance_test_suite/src/kernel_tests/priority_boost.rs
index 53b280d0f6..93078c4bbd 100644
--- a/src/constance_test_suite/src/kernel_tests/priority_boost.rs
+++ b/src/constance_test_suite/src/kernel_tests/priority_boost.rs
@@ -1,18 +1,21 @@
 //! Activates and deactivates Priority Boost.
 use constance::{kernel::Task, prelude::*};
+use core::marker::PhantomData;
 
 use super::Driver;
 
 pub struct App<System> {
-    task: Task<System>,
+    _phantom: PhantomData<System>,
 }
 
 impl<System: Kernel> App<System> {
     constance::configure! {
         pub const fn new<D: Driver<Self>>(_: &mut CfgBuilder<System>) -> Self {
-            let task = new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
+            new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
 
-            App { task }
+            App {
+                _phantom: PhantomData,
+            }
         }
     }
 }
diff --git a/src/constance_test_suite/src/kernel_tests/time_misc.rs b/src/constance_test_suite/src/kernel_tests/time_misc.rs
index d8447e25ed..7a15a02b18 100644
--- a/src/constance_test_suite/src/kernel_tests/time_misc.rs
+++ b/src/constance_test_suite/src/kernel_tests/time_misc.rs
@@ -5,19 +5,20 @@ use constance::{
     prelude::*,
     time::{Duration, Time},
 };
+use core::marker::PhantomData;
 
 use super::Driver;
 
 pub struct App<System> {
-    task: Task<System>,
+    _phantom: PhantomData<System>,
 }
 
 impl<System: Kernel> App<System> {
     constance::configure! {
         pub const fn new<D: Driver<Self>>(_: &mut CfgBuilder<System>) -> Self {
-            let task = new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
+            new! { Task<_>, start = task_body::<System, D>, priority = 0, active = true };
 
-            App { task }
+            App { _phantom: PhantomData }
         }
     }
 }