diff --git a/src/mlkem.rs b/src/mlkem.rs
index cb5afd8..2dcddd1 100644
--- a/src/mlkem.rs
+++ b/src/mlkem.rs
@@ -101,7 +101,7 @@ pub fn mlkem_decap(ct: &MLKEMCiphertext, sk: &MLKEMPrivKey) -> MLKEMSharedKey {
     let mut agent = MLKEMAGENT.lock().unwrap();
 
     unsafe {
-        agent.perform_ipc_call(1, &[ss.0.get_offset(), ct.0.get_offset(), sk.0.get_offset()]);
+        agent.perform_ipc_call(2, &[ss.0.get_offset(), ct.0.get_offset(), sk.0.get_offset()]);
     }
 
     ss