diff --git a/src/IMG_xcf.c b/src/IMG_xcf.c
index 95846f28..321fd886 100644
--- a/src/IMG_xcf.c
+++ b/src/IMG_xcf.c
@@ -826,7 +826,7 @@ do_layer_surface(SDL_Surface *surface, SDL_RWops *src, xcf_header *head, xcf_lay
                         }
                         break;
                     default:
-                        IMG_SetError("Unknown Gimp image type (%"SDL_PRIs32")", head->image_type);
+                        IMG_SetError("Unknown Gimp image type (%"SDL_PRIu32")", head->image_type);
                         if (hierarchy) {
                             free_xcf_hierarchy(hierarchy);
                         }
@@ -857,7 +857,7 @@ do_layer_surface(SDL_Surface *surface, SDL_RWops *src, xcf_header *head, xcf_lay
                         }
                         break;
                     default:
-                        IMG_SetError("Unknown Gimp image type (%"SDL_PRIs32")\n", head->image_type);
+                        IMG_SetError("Unknown Gimp image type (%"SDL_PRIu32")\n", head->image_type);
                         if (tile)
                             free_xcf_tile(tile);
                         if (level)