diff --git a/server/tests/integration_tests.rs b/server/tests/integration_tests.rs
index 0e93a8e..b23d5f2 100644
--- a/server/tests/integration_tests.rs
+++ b/server/tests/integration_tests.rs
@@ -496,8 +496,9 @@ async fn test_http() -> Result<(), Box<dyn std::error::Error>> {
     let session_id = r.session_id;
     println!("Session ID: {}", session_id);
 
-    // Error test
+    // Error tests
 
+    // Test if passing the wrong session ID returns an error
     let wrong_session_id = Uuid::new_v4();
     let r = client
         .post("http://127.0.0.1:2744/get_session_info")
@@ -511,6 +512,41 @@ async fn test_http() -> Result<(), Box<dyn std::error::Error>> {
     let r = r.json::<server::Error>().await?;
     assert_eq!(r.code, server::SESSION_NOT_FOUND);
 
+    // Test if trying to close the session as a participant fails
+    // Attempt to close the session as a participant (Bob)
+    // Log in as Bob
+    let r = client
+        .post("http://127.0.0.1:2744/challenge")
+        .json(&server::ChallengeArgs {})
+        .send()
+        .await?;
+    let r = r.json::<server::ChallengeOutput>().await?;
+    let bob_challenge = r.challenge;
+    let bob_private =
+        xed25519::PrivateKey::from(&TryInto::<[u8; 32]>::try_into(bob_keypair.private).unwrap());
+    let bob_signature: [u8; 64] = bob_private.sign(bob_challenge.as_bytes(), &mut rng);
+    let r = client
+        .post("http://127.0.0.1:2744/login")
+        .json(&server::KeyLoginArgs {
+            uuid: bob_challenge,
+            pubkey: bob_keypair.public.clone(),
+            signature: bob_signature.to_vec(),
+        })
+        .send()
+        .await?;
+    let r = r.json::<server::KeyLoginOutput>().await?;
+    let bob_access_token = r.access_token;
+    // Try to close the session
+    let r = client
+        .post("http://127.0.0.1:2744/close_session")
+        .bearer_auth(bob_access_token)
+        .json(&server::CloseSessionArgs { session_id })
+        .send()
+        .await?;
+    assert_eq!(r.status(), reqwest::StatusCode::INTERNAL_SERVER_ERROR);
+    let r = r.json::<server::Error>().await?;
+    assert_eq!(r.code, server::NOT_COORDINATOR);
+
     Ok(())
 }