diff --git a/sys/teken/teken_scs.h b/sys/teken/teken_scs.h
index 815e1d7f6680..03e88f29d0e6 100644
--- a/sys/teken/teken_scs.h
+++ b/sys/teken/teken_scs.h
@@ -41,12 +41,12 @@ static const uint16_t teken_boxdrawing_unicode[31] = {
     0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7
 };
 
-/* CP437 points for VT100 box drawing. */
+/* ASCII points for VT100 box drawing. */
 static const uint8_t teken_boxdrawing_8bit[31] = {
-    0x04, 0xb1, 0x48, 0x46, 0x43, 0x4c, 0xf8, 0xf1,
-    0x4e, 0x56, 0xd9, 0xbf, 0xda, 0xc0, 0xc5, 0xc4,
-    0xc4, 0xc4, 0xc4, 0xc4, 0xc3, 0xb4, 0xc1, 0xc2,
-    0xb3, 0xf3, 0xf2, 0xe3, 0xd8, 0x9c, 0xfa,
+    '?', '?', 'H', 'F', 'C', 'L', '?', '?',
+    'N', 'V', '+', '+', '+', '+', '+', '-',
+    '-', '-', '-', '-', '+', '+', '+', '+',
+    '|', '?', '?', '?', '?', '?', '?',
 };
 
 static teken_char_t