Index: eagle_bin/test_parser/eagle_bin.c
===================================================================
--- eagle_bin/test_parser/eagle_bin.c	(revision 9548)
+++ eagle_bin/test_parser/eagle_bin.c	(revision 9549)
@@ -2139,7 +2139,7 @@
 			goto found;
 	}
 
-	printf("E: unknown block ID 0x%x 0x%x at offset %ld\n", block[0], block[1], ftell(f));
+	printf("E: unknown block ID 0x%02x%02x at offset %ld\n", block[0], block[1], ftell(f));
 	return -1;
 
 	found:;