diff --git a/rialto/tests/test.rs b/rialto/tests/test.rs
index e975bbf..c9d68ed 100644
--- a/rialto/tests/test.rs
+++ b/rialto/tests/test.rs
@@ -49,8 +49,8 @@
     let mut vm = start_service_vm(vm_type)?;
 
     check_processing_reverse_request(&mut vm)?;
-    check_processing_generating_key_pair_request(&mut vm)?;
-    check_processing_generating_certificate_request(&mut vm)?;
+    let maced_public_key = check_processing_generating_key_pair_request(&mut vm)?;
+    check_processing_generating_certificate_request(&mut vm, maced_public_key)?;
     Ok(())
 }
 
@@ -68,7 +68,7 @@
     Ok(())
 }
 
-fn check_processing_generating_key_pair_request(vm: &mut ServiceVm) -> Result<()> {
+fn check_processing_generating_key_pair_request(vm: &mut ServiceVm) -> Result<Vec<u8>> {
     let request = Request::GenerateEcdsaP256KeyPair;
 
     let response = vm.process_request(request)?;
@@ -77,9 +77,9 @@
     match response {
         Response::GenerateEcdsaP256KeyPair(EcdsaP256KeyPair { maced_public_key, .. }) => {
             assert_array_has_nonzero(&maced_public_key[..]);
-            Ok(())
+            Ok(maced_public_key)
         }
-        _ => bail!("Incorrect response type"),
+        _ => bail!("Incorrect response type: {response:?}"),
     }
 }
 
@@ -87,8 +87,14 @@
     assert!(v.iter().any(|&x| x != 0))
 }
 
-fn check_processing_generating_certificate_request(vm: &mut ServiceVm) -> Result<()> {
-    let params = GenerateCertificateRequestParams { keys_to_sign: vec![], challenge: vec![] };
+fn check_processing_generating_certificate_request(
+    vm: &mut ServiceVm,
+    maced_public_key: Vec<u8>,
+) -> Result<()> {
+    let params = GenerateCertificateRequestParams {
+        keys_to_sign: vec![maced_public_key],
+        challenge: vec![],
+    };
     let request = Request::GenerateCertificateRequest(params);
 
     let response = vm.process_request(request)?;
@@ -96,7 +102,7 @@
 
     match response {
         Response::GenerateCertificateRequest(_) => Ok(()),
-        _ => bail!("Incorrect response type"),
+        _ => bail!("Incorrect response type: {response:?}"),
     }
 }