diff --git a/library/lmots.c b/library/lmots.c
index 4061edd..a3bfff8 100644
--- a/library/lmots.c
+++ b/library/lmots.c
@@ -45,9 +45,15 @@
 
 #include "psa/crypto.h"
 
-#define PSA_TO_MBEDTLS_ERR(status) PSA_TO_MBEDTLS_ERR_LIST(status,   \
-                                                           psa_to_lms_errors,             \
-                                                           psa_generic_status_to_mbedtls)
+/* Define a local translating function to save code size by not using too many
+ * arguments in each translating place. */
+static int local_err_translation(psa_status_t status)
+{
+    return psa_status_to_mbedtls(status, psa_to_lms_errors,
+                                 sizeof(psa_to_lms_errors),
+                                 psa_generic_status_to_mbedtls);
+}
+#define PSA_TO_MBEDTLS_ERR(status) local_err_translation(status)
 
 #define PUBLIC_KEY_TYPE_OFFSET     (0)
 #define PUBLIC_KEY_I_KEY_ID_OFFSET (PUBLIC_KEY_TYPE_OFFSET + \