1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c
index cc6dbf517c..c0e84a2f61 100644
--- a/firmware/drivers/fat.c
+++ b/firmware/drivers/fat.c
@@ -1257,7 +1257,7 @@ static int fat_mount_internal(struct bpb *fat_bpb)
         /* Sanity check FS info */
         long info = BYTES2INT32(buf, FSINFO_SIGNATURE);
         if (info != FSINFO_SIGNATURE_VAL) {
-                DEBUGF("%S() FSInfo signature mismatch (%x)\n",
+                DEBUGF("%s() FSInfo signature mismatch (%lx)\n",
                        __func__, info);
                 FAT_ERROR(-9);
         }