diff --git a/tools/font_pack.py b/tools/font_pack.py
index 55bdc26..f71e71e 100644
--- a/tools/font_pack.py
+++ b/tools/font_pack.py
@@ -57,7 +57,7 @@
 					v = v | (1 << ix)
 					if (ix + 1) > width:
 						width = ix + 1
-			for ix in range(0, font_width, 8):
+			for ix in range(0, font_width, font_width):
 				fp.write(struct.pack("<B", (v >> ix) & 255))
 		if width == 0:
 			width = space_width