Index: cdrkit-1.1.9/genisoimage/genisoimage.c
===================================================================
--- cdrkit-1.1.9/genisoimage/genisoimage.c
+++ cdrkit-1.1.9/genisoimage/genisoimage.c	2009-05-20 11:55:01.000000000 +0200
@@ -3371,7 +3371,7 @@
 	if (goof) {
 		fprintf(stderr, "ISO9660/Rock Ridge tree sort failed.\n");
 		if(merge_warn_msg)
-			fprintf(stderr, merge_warn_msg);
+			fputs(merge_warn_msg, stderr);
 		exit(1);
 	}
 #ifdef UDF
@@ -3384,7 +3384,7 @@
 	if (goof) {
 		fprintf(stderr, "Joliet tree sort failed. The -joliet-long switch may help you.\n");
 		if(merge_warn_msg)
-			fprintf(stderr, merge_warn_msg);
+			fputs(merge_warn_msg, stderr);
 		exit(1);
 	}
 	/*
Index: cdrkit-1.1.9/genisoimage/tree.c
===================================================================
--- cdrkit-1.1.9/genisoimage/tree.c
+++ cdrkit-1.1.9/genisoimage/tree.c	2009-05-20 12:00:16.000000000 +0200
@@ -647,7 +647,7 @@
      fprintf(stderr, "Unable to sort directory %s\n",
            this_dir->whole_name);
      if(merge_warn_msg)
-        fprintf(stderr, merge_warn_msg);
+        fputs(merge_warn_msg, stderr);
      exit(1);
 	}
 	/*