diff --git a/klippy/extras/display/hd44780.py b/klippy/extras/display/hd44780.py
index 7c2477cb3..a868a736b 100644
--- a/klippy/extras/display/hd44780.py
+++ b/klippy/extras/display/hd44780.py
@@ -103,7 +103,7 @@ class HD44780:
         data = self.icons.get(glyph_name)
         if data is not None:
             slot, bits = data
-            self.write_text(x, y, chr(slot))
+            self.write_text(x, y, [slot])
             self.glyph_framebuffer[slot * 8:(slot + 1) * 8] = bits
             return 1
         char = TextGlyphs.get(glyph_name)