1 files changed, 1 insertions, 1 deletions
diff --git a/src/font.h b/src/font.h
index ee3942e..f82f2a0 100644
--- a/src/font.h
+++ b/src/font.h
@@ -37,6 +37,6 @@ font_get_height(struct font *font) __attribute__((pure));
 
 void
 font_render(struct font *font, png_const_colorp fg, png_const_colorp bg,
-		char ch, png_bytepp rows, int row, int col);
+		unsigned char ch, png_bytepp rows, int row, int col);
 
 #endif  /* FONT_H_ */