diff --git a/sys/crypto/aes/aes.c b/sys/crypto/aes/aes.c
index fdb5c0e7e9..ac65a0e3ce 100644
--- a/sys/crypto/aes/aes.c
+++ b/sys/crypto/aes/aes.c
@@ -961,7 +961,6 @@ int aes_encrypt(cipher_context_t *context, uint8_t *plainBlock,
     int r;
 #endif /* ?FULL_UNROLL */
 
-    //assert(plainBlock && cipherBlock && key);         is this really needed?
     rk = key->rd_key;
 
     /*
@@ -1222,7 +1221,6 @@ int aes_decrypt(cipher_context_t *context, uint8_t *cipherBlock,
     int r;
 #endif /* ?FULL_UNROLL */
 
-    // assert(cipherBlock && plainBlock && key);        // nedded? see above
     rk = key->rd_key;
 
     /*