diff --git a/lib/raop_buffer.c b/lib/raop_buffer.c
index 1352e93..ddff15d 100755
--- a/lib/raop_buffer.c
+++ b/lib/raop_buffer.c
@@ -171,7 +171,7 @@ raop_buffer_decrypt(raop_buffer_t *raop_buffer, unsigned char *data, unsigned ch
     }
 #endif
 
-    encryptedlen = payload_size / 16*16;
+    encryptedlen = (payload_size / 16) * 16;
     memset(output, 0, payload_size);
     // Need to be initialized internally
     aes_ctx_t *aes_ctx_audio = aes_cbc_init(raop_buffer->aeskey, raop_buffer->aesiv, AES_DECRYPT);