1 files changed, 1 insertions, 1 deletions
diff --git a/font.h b/font.h
index b1a512e..e95b397 100644
--- a/font.h
+++ b/font.h
@@ -27,7 +27,7 @@ struct charcode {
   const char font;
 };
 
-charcode charmap[] PROGMEM = {
+const charcode charmap[] PROGMEM = {
 // tilde
   {0x007e, 0xe9},
 // latin-1 supplement