diff --git a/libfreefare/freefare.h b/libfreefare/freefare.h
index b751d5f..460ecce 100644
--- a/libfreefare/freefare.h
+++ b/libfreefare/freefare.h
@@ -354,8 +354,8 @@ int		 mifare_desfire_set_configuration (MifareTag tag, bool disable_format, bool
 int		 mifare_desfire_set_default_key (MifareTag tag, MifareDESFireKey key);
 int		 mifare_desfire_set_ats (MifareTag tag, uint8_t *ats);
 int		 mifare_desfire_get_card_uid (MifareTag tag, char **uid);
-int		 mifare_desfire_get_file_ids (MifareTag tag, uint8_t *files[], size_t *count);
-int		 mifare_desfire_get_iso_file_ids (MifareTag tag, uint16_t *files[], size_t *count);
+int		 mifare_desfire_get_file_ids (MifareTag tag, uint8_t **files, size_t *count);
+int		 mifare_desfire_get_iso_file_ids (MifareTag tag, uint16_t **files, size_t *count);
 int		 mifare_desfire_get_file_settings (MifareTag tag, uint8_t file_no, struct mifare_desfire_file_settings *settings);
 int		 mifare_desfire_change_file_settings (MifareTag tag, uint8_t file_no, uint8_t communication_settings, uint16_t access_rights);
 int		 mifare_desfire_create_std_data_file (MifareTag tag, uint8_t file_no, uint8_t communication_settings, uint16_t access_rights, uint32_t file_size);
diff --git a/libfreefare/mifare_desfire.c b/libfreefare/mifare_desfire.c
index edf1707..a117b99 100644
--- a/libfreefare/mifare_desfire.c
+++ b/libfreefare/mifare_desfire.c
@@ -1160,7 +1160,7 @@ mifare_desfire_get_card_uid (MifareTag tag, char **uid)
 /* Application level commands */
 
 int
-mifare_desfire_get_file_ids (MifareTag tag, uint8_t *files[], size_t *count)
+mifare_desfire_get_file_ids (MifareTag tag, uint8_t **files, size_t *count)
 {
     ASSERT_ACTIVE (tag);
     ASSERT_MIFARE_DESFIRE (tag);
@@ -1193,7 +1193,7 @@ mifare_desfire_get_file_ids (MifareTag tag, uint8_t *files[], size_t *count)
 }
 
 int
-mifare_desfire_get_iso_file_ids (MifareTag tag, uint16_t *files[], size_t *count)
+mifare_desfire_get_iso_file_ids (MifareTag tag, uint16_t **files, size_t *count)
 {
     ASSERT_ACTIVE (tag);
     ASSERT_MIFARE_DESFIRE (tag);