diff --git a/bignum.c b/bignum.c
index 133227390d..6b558287c3 100644
--- a/bignum.c
+++ b/bignum.c
@@ -290,7 +290,7 @@ rb_quad_pack(buf, val)
     if (!RBIGNUM(val)->sign) {
 	len = QUAD_SIZE;
 	while (len--) {
-	    *buf = ‾*buf;
+	    *buf = ~*buf;
 	    buf++;
 	}
     }
diff --git a/dln.c b/dln.c
index 1ad9a8ac45..ebad1e0091 100644
--- a/dln.c
+++ b/dln.c
@@ -1535,7 +1535,7 @@ dln_load(file)
 	if (p1 = strrchr(fname,'/'))
 	    fname = p1 + 1;
 	if (p2 = strrchr(fname,'.'))
-	    *p2 = '¥0';
+	    *p2 = '\0';
 
 	if ((handle = (void*)dlopen(fname, 0)) == NULL) {
 	    goto failed;