diff --git a/exercises/20_threads/threads2.rs b/exercises/20_threads/threads2.rs
index 7020cb9cea..ec6410b57a 100644
--- a/exercises/20_threads/threads2.rs
+++ b/exercises/20_threads/threads2.rs
@@ -30,5 +30,8 @@ fn main() {
     }
 
     // TODO: Print the value of `JobStatus.jobs_done`.
-    println!("Jobs done: {}", todo!());
+    let jobs_done: u32 = todo!();
+    println!("Jobs done: {}", jobs_done);
+
+    assert_eq!(jobs_done, 10, "All 10 threads must update the *shared* status");
 }
diff --git a/solutions/20_threads/threads2.rs b/solutions/20_threads/threads2.rs
index bc268d63f6..f70e21788e 100644
--- a/solutions/20_threads/threads2.rs
+++ b/solutions/20_threads/threads2.rs
@@ -36,6 +36,12 @@ fn main() {
         handle.join().unwrap();
     }
 
-    println!("Jobs done: {}", status.lock().unwrap().jobs_done);
-    //                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+    let jobs_done: u32 = status.lock().unwrap().jobs_done;
+    //                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+    println!("Jobs done: {}", jobs_done);
+
+    assert_eq!(
+        jobs_done, 10,
+        "All 10 threads must update the *shared* status"
+    );
 }