diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index a9ba787..dd5b446 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -116,8 +116,9 @@
     return global_data.drivers_initialized;
 }
 
-int psa_can_do_cipher(psa_algorithm_t cipher_alg)
+int psa_can_do_cipher(psa_key_type_t key_type, psa_algorithm_t cipher_alg)
 {
+    (void) key_type;
     (void) cipher_alg;
     return global_data.drivers_initialized;
 }