diff --git a/fab.lib b/fab.lib
index fd6720b0b2b25d7d63cf5eaa7388b971fcf5aab1..6aad5624bd7c30d7cf5171ecc539164cd0a56337 100644
--- a/fab.lib
+++ b/fab.lib
@@ -2255,8 +2255,8 @@ X PA4 2 600 -100 100 L 50 50 1 1 B
 X PA5 3 600 -200 100 L 50 50 1 1 B
 X PA6 4 600 -300 100 L 50 50 1 1 B
 X PA7 5 600 -400 100 L 50 50 1 1 B
-X PB3 6 -600 0 100 R 50 50 1 1 B
-X PB2 7 -600 100 100 R 50 50 1 1 B
+X PB3/RXD 6 -600 0 100 R 50 50 1 1 B
+X PB2/TXD 7 -600 100 100 R 50 50 1 1 B
 X PB1 8 -600 200 100 R 50 50 1 1 B
 X PB0 9 -600 300 100 R 50 50 1 1 B
 ENDDRAW