Index: kernel/genarch/src/fb/fb.c
===================================================================
--- kernel/genarch/src/fb/fb.c	(revision ca645a25041e245f85f0c75c5695e8546fb409f1)
+++ kernel/genarch/src/fb/fb.c	(revision 663f445f6ae6d51eff8cb7bcc345d4a411d3ff7e)
@@ -123,5 +123,5 @@
 } fb_instance_t;
 
-static void fb_putwchar(outdev_t *, wchar_t);
+static void fb_putuchar(outdev_t *, char32_t);
 static void fb_redraw(outdev_t *);
 static void fb_scroll_up(outdev_t *);
@@ -129,5 +129,5 @@
 
 static outdev_operations_t fbdev_ops = {
-	.write = fb_putwchar,
+	.write = fb_putuchar,
 	.redraw = fb_redraw,
 	.scroll_up = fb_scroll_up,
@@ -418,5 +418,5 @@
  *
  */
-static void fb_putwchar(outdev_t *dev, wchar_t ch)
+static void fb_putuchar(outdev_t *dev, char32_t ch)
 {
 	fb_instance_t *instance = (fb_instance_t *) dev->data;
Index: kernel/genarch/src/fb/font-8x16.c
===================================================================
--- kernel/genarch/src/fb/font-8x16.c	(revision ca645a25041e245f85f0c75c5695e8546fb409f1)
+++ kernel/genarch/src/fb/font-8x16.c	(revision 663f445f6ae6d51eff8cb7bcc345d4a411d3ff7e)
@@ -43,5 +43,5 @@
  * mark glyph if no specific glyph exists.
  */
-uint16_t fb_font_glyph(const wchar_t ch)
+uint16_t fb_font_glyph(const char32_t ch)
 {
 	if (ch == 0x0000)