--- john-1.9.0-jumbo-1/src/ztex/pkt_comm/word_gen.h
+++ john-1.9.0-jumbo-1/src/ztex/pkt_comm/word_gen.h
@@ -32,7 +32,7 @@
 	//unsigned char magic;	// 0xBB <- added by pkt_word_gen_new()
 };
 
-struct word_gen word_gen_words_pass_by;
+extern struct word_gen word_gen_words_pass_by;
 
 struct pkt *pkt_word_gen_new(struct word_gen *word_gen);
 
--- john-1.9.0-jumbo-1/src/ztex/ztex.h
+++ john-1.9.0-jumbo-1/src/ztex/ztex.h
@@ -159,7 +159,6 @@
 int ztex_reset_cpu(struct ztex_device *dev, int r);
 
 // firmware image loaded from an ihx (Intel Hex format) file.
-const int IHX_SIZE_MAX;
 struct ihx_data {
 	short *data;
 };