diff --git a/jtag/ChangeLog b/jtag/ChangeLog
index 7fc001fe..ee667aa2 100644
--- a/jtag/ChangeLog
+++ b/jtag/ChangeLog
@@ -2,6 +2,8 @@
 
   * src/cmd/include.c: Include ctype.h for isalpha().
 
+  * src/bsdl/bsdl_sem.c (create_register): Use %zu for size_t with printf().
+
 2009-01-19  Kolja Waschk <kawk>
 
   * doc/UrJTAG.txt,
diff --git a/jtag/src/bsdl/bsdl_sem.c b/jtag/src/bsdl/bsdl_sem.c
index c888c900..70a2d8a0 100644
--- a/jtag/src/bsdl/bsdl_sem.c
+++ b/jtag/src/bsdl/bsdl_sem.c
@@ -206,7 +206,7 @@ static int create_register( jtag_ctrl_t *jc, char *reg_name, size_t len)
     return 1;
 
   /* convert length information to string */
-  snprintf( len_str, str_len, "%i", len );
+  snprintf( len_str, str_len, "%zu", len );
 
   if (jc->proc_mode & BSDL_MODE_INSTR_EXEC)
     cmd_run( jc->chain, cmd );