diff --git a/armsrc/spiffs.c b/armsrc/spiffs.c
index 87321148d..81172476f 100644
--- a/armsrc/spiffs.c
+++ b/armsrc/spiffs.c
@@ -401,21 +401,21 @@ int rdv40_spiffs_lazy_mount_rollback(int changed) {
 // TODO : forbid writing to a filename which already exists as lnk !
 // TODO : forbid writing to a filename.lnk which already exists without lnk !
 int rdv40_spiffs_write(char *filename, uint8_t *src, uint32_t size, RDV40SpiFFSSafetyLevel level) {
-    RDV40_SPIFFS_SAFE_FUNCTION(                                  //
-        write_to_spiffs((char *)filename, (uint8_t *)src, size); //
+    RDV40_SPIFFS_SAFE_FUNCTION(
+        write_to_spiffs(filename, src, size);
     )
 }
 
 int rdv40_spiffs_append(char *filename, uint8_t *src, uint32_t size, RDV40SpiFFSSafetyLevel level) {
-    RDV40_SPIFFS_SAFE_FUNCTION(                                   //
-        append_to_spiffs((char *)filename, (uint8_t *)src, size); //
+    RDV40_SPIFFS_SAFE_FUNCTION(
+        append_to_spiffs(filename, src, size);
     )
 }
 
 // todo integrate reading symlinks transparently
 int rdv40_spiffs_read(char *filename, uint8_t *dst, uint32_t size, RDV40SpiFFSSafetyLevel level) {
-    RDV40_SPIFFS_SAFE_FUNCTION(                                   //
-        read_from_spiffs((char *)filename, (uint8_t *)dst, size); //
+    RDV40_SPIFFS_SAFE_FUNCTION(
+        read_from_spiffs(filename, dst, size);
     )
 }