--- Xwnmo/xwnmo/ichiran.c.orig
+++ Xwnmo/xwnmo/ichiran.c
@@ -1909,7 +1909,7 @@ insert_space_in_ichi_buf(p,  space_len)
 int p, space_len;
 {
     register Ichiran *ichi = cur_root->ichi;
-    register i, j, len, save_len, max_len = 0;
+    register int i, j, len, save_len, max_len = 0;
     register unsigned char *s;
     char buf[MAX_ICHI_COLUMNS];
 
