diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index b7c891eb7..b16fac16f 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -7953,7 +7953,7 @@ exit:
     if (status != PSA_SUCCESS) {
         psa_pake_abort(operation);
     }
-    unlock_status = psa_unregister_read(slot);
+    unlock_status = psa_unregister_read_under_mutex(slot);
     return (status == PSA_SUCCESS) ? unlock_status : status;
 }