Index: obj_text.h
===================================================================
--- obj_text.h	(revision 19996)
+++ obj_text.h	(revision 19997)
@@ -76,7 +76,7 @@
 
 
 /* Low level draw call for direct rendering on preview */
-void pcb_text_draw_string_simple(pcb_font_t *font, const unsigned char *string, pcb_coord_t x0, pcb_coord_t y0, int scale, double rotdeg, int mirror, pcb_coord_t thickness, int xordraw, pcb_coord_t xordx, pcb_coord_t xordy);
+void pcb_text_draw_string_simple(pcb_font_t *font, const char *string, pcb_coord_t x0, pcb_coord_t y0, int scale, double rotdeg, int mirror, pcb_coord_t thickness, int xordraw, pcb_coord_t xordx, pcb_coord_t xordy);
 
 /* Recalculate the bounding box of all dynamic text objects that are
    directly under data - useful e.g. on parent attr change */