diff --git a/matrix_sdk_crypto/src/machine.rs b/matrix_sdk_crypto/src/machine.rs
index 56aa70ef..215bb763 100644
--- a/matrix_sdk_crypto/src/machine.rs
+++ b/matrix_sdk_crypto/src/machine.rs
@@ -899,7 +899,7 @@ impl OlmMachine {
         };
 
         if session.expired() {
-            panic!("Session is expired");
+            panic!("Session expired");
         }
 
         Ok(session.encrypt(content).await)