Index: uspace/app/fontedit/fontedit.c
===================================================================
--- uspace/app/fontedit/fontedit.c	(revision 16357ec5aa427de771a1594454a86fbe93cebbb8)
+++ uspace/app/fontedit/fontedit.c	(revision efca2e48da9fdf40325200492096839a3eab0673)
@@ -166,4 +166,8 @@
 	case KC_4:
 		font_edit_adjust_advance(fedit, +1);
+		break;
+	case KC_X:
+		(void) gfx_glyph_bmp_clear(fedit->gbmp);
+		font_edit_paint(fedit);
 		break;
 	default: