1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/font.h b/firmware/font.h
index 13d60e560b..8535ab216b 100644
--- a/firmware/font.h
+++ b/firmware/font.h
@@ -70,7 +70,7 @@
 
 /* MWIMAGEBITS helper macros*/
 #define MWIMAGE_WORDS(x)        (((x)+15)/16)   /* image size in words*/
-#define MWIMAGE_BYTES(x)        (((x)+7)/8)     /* image size in bytes*/
+#define MWIMAGE_BYTES(x)        (MWIMAGE_WORDS(x)*sizeof(MWIMAGEBITS))
 #define MWIMAGE_BITSPERIMAGE    (sizeof(MWIMAGEBITS) * 8)
 #define MWIMAGE_BITVALUE(n)     ((MWIMAGEBITS) (((MWIMAGEBITS) 1) << (n)))
 #define MWIMAGE_FIRSTBIT        (MWIMAGE_BITVALUE(MWIMAGE_BITSPERIMAGE - 1))