diff --git a/README.md b/README.md
index 938e11a..cfba980 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # `std` is the goboscript standard library
 
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/goboscript/std)
+
 ## Installation
 
 Add the following to your `goboscript.toml` file:
diff --git a/font.gs b/font.gs
index 848e7a6..c04a1da 100644
--- a/font.gs
+++ b/font.gs
@@ -25,7 +25,7 @@ var font_linelen = 0;
 
 %define FONT_CALCULATE_WIDTH_FROM_LENGTH(LENGTH) \
     (LENGTH*(FONT_WIDTH+2+font_char_spacing)-(2+font_char_spacing))*font_scale
-%define FONT_CALCULATE_WIDTH(TEXT) FONT_CALCULATE_WIDTH_FROM_LENGTH(length($TEXT))
+%define FONT_CALCULATE_WIDTH(TEXT) FONT_CALCULATE_WIDTH_FROM_LENGTH(length(TEXT))
 
 proc font_render_char char {
     switch_costume $char;