diff --git a/img2cpi.c b/img2cpi.c
index 9b3fb11..01509c9 100644
--- a/img2cpi.c
+++ b/img2cpi.c
@@ -30,8 +30,9 @@ struct palette {
 };
 #define LENGTHOF(...) (sizeof(__VA_ARGS__) / sizeof(*(__VA_ARGS__)))
 #define PALETTE(...) { .count = LENGTHOF((union color[]){__VA_ARGS__}), .colors = {__VA_ARGS__} }
+typedef char GlyphBitmap[11];
 
-const extern char font_atlas[256][11];
+const extern GlyphBitmap font_atlas[256];
 const extern struct palette DEFAULT_PALETTE, DEFAULT_GRAY_PALETTE;
 
 struct arguments {