diff --git a/minui/roboto_15x24.h b/minui/roboto_15x24.h
index 7857c59..aea1cbf 100644
--- a/minui/roboto_15x24.h
+++ b/minui/roboto_15x24.h
@@ -1,14 +1,14 @@
 struct {
   unsigned width;
   unsigned height;
-  unsigned cwidth;
-  unsigned cheight;
+  unsigned char_width;
+  unsigned char_height;
   unsigned char rundata[3979];
 } font = {
   .width = 1440,
   .height = 24,
-  .cwidth = 15,
-  .cheight = 24,
+  .char_width = 15,
+  .char_height = 24,
   .rundata = {
 0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x6e,0x81,0x3e,0x81,
 0x07,0x81,0x7f,0x7f,0x7f,0x7f,0x7f,0x76,0x84,0x17,0x84,0x7f,0x7f,0x7f,0x7f,