diff --git a/docs/hardware.md b/docs/hardware.md
index ab23e24a..ba2828f8 100644
--- a/docs/hardware.md
+++ b/docs/hardware.md
@@ -65,7 +65,7 @@ TODO
 |-----------|-------|-----|
 |I2C1_SCL|PB6|display module pin 30|
 |I2C1_SDA|PB7|display module pin 31|
-|EINT|PC4||
+|EINT|PC4|display module pin 39|
 |REST|PC5||
 
 #### microSD Socket
diff --git a/docs/toif.md b/docs/toif.md
index 0a46cfb1..1b7499e8 100644
--- a/docs/toif.md
+++ b/docs/toif.md
@@ -56,3 +56,4 @@ zdata = zdata[2:-4] # strip header and checksum
 ## Tools
 
 * [png2toi](../tools/png2toi) - tool for converting PNG into TOI format
+* [toi2png](../tools/toi2png) - tool for converting TOI into PNG