diff --git a/fab.lib b/fab.lib
index 477392637bbe2a35c80cb6f5c0e91e8b7c261532..66eff440b5ccfc0c01a3bbc418d366a81eeac01d 100644
--- a/fab.lib
+++ b/fab.lib
@@ -2182,7 +2182,7 @@ X VCC 1 0 700 100 D 50 50 1 1 W
 X ~RESET~/UPDI/PA0 10 600 300 100 L 50 50 1 1 B
 X PA1 11 600 200 100 L 50 50 1 1 B
 X PA2 12 600 100 100 L 50 50 1 1 B
-X PA3 13 600 0 100 L 50 50 1 1 B
+X PA3/SCK 13 600 0 100 L 50 50 1 1 B
 X GND 14 0 -700 100 U 50 50 1 1 W
 X PA4 2 600 -100 100 L 50 50 1 1 B
 X PA5 3 600 -200 100 L 50 50 1 1 B
@@ -2190,8 +2190,8 @@ X PA6/DAC 4 600 -300 100 L 50 50 1 1 B
 X PA7 5 600 -400 100 L 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
+X PB1/SDA 8 -600 200 100 R 50 50 1 1 B
+X PB0/SCL 9 -600 300 100 R 50 50 1 1 B
 ENDDRAW
 ENDDEF
 #
@@ -2208,8 +2208,8 @@ $ENDFPLIST
 DRAW
 S -500 -700 500 700 0 1 10 f
 X VCC 1 0 800 100 D 50 50 1 1 W
-X PB1 10 -600 400 100 R 50 50 1 1 B
-X PB0 11 -600 500 100 R 50 50 1 1 B
+X PB1/SDA 10 -600 400 100 R 50 50 1 1 B
+X PB0/SCL 11 -600 500 100 R 50 50 1 1 B
 X PC0 12 -600 -200 100 R 50 50 1 1 B
 X PC1 13 -600 -300 100 R 50 50 1 1 B
 X PC2 14 -600 -400 100 R 50 50 1 1 B
@@ -2217,7 +2217,7 @@ X PC3 15 -600 -500 100 R 50 50 1 1 B
 X ~RESET~/UPDI/PA0 16 600 400 100 L 50 50 1 1 B
 X PA1 17 600 300 100 L 50 50 1 1 B
 X PA2 18 600 200 100 L 50 50 1 1 B
-X PA3 19 600 100 100 L 50 50 1 1 B
+X PA3/SCK 19 600 100 100 L 50 50 1 1 B
 X PA4 2 600 0 100 L 50 50 1 1 B
 X GND 20 0 -800 100 U 50 50 1 1 W
 X PA5 3 600 -100 100 L 50 50 1 1 B
@@ -2245,10 +2245,10 @@ S -500 -600 500 600 0 1 10 f
 X VCC 1 0 700 100 D 50 50 1 1 W
 X TXD/PA6/DAC 2 600 -200 100 L 50 50 1 1 B
 X RXD/PA7 3 600 -300 100 L 50 50 1 1 B
-X PA1 4 600 200 100 L 50 50 1 1 B
-X PA2 5 600 100 100 L 50 50 1 1 B
+X PA1/SDA 4 600 200 100 L 50 50 1 1 B
+X PA2/SCL 5 600 100 100 L 50 50 1 1 B
 X ~RESET~/UPDI/PA0 6 600 300 100 L 50 50 1 1 B
-X PA3 7 600 0 100 L 50 50 1 1 B
+X PA3/SCK 7 600 0 100 L 50 50 1 1 B
 X GND 8 0 -700 100 U 50 50 1 1 W
 ENDDRAW
 ENDDEF