diff --git a/firmware/main.c b/firmware/main.c
index 629cf35..ac683f5 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -62,6 +62,9 @@
  *    proprietary connector. The contained matrix has 13 columns and 22 rows,
  *    which is too big for a naked Mega32. So I had to make a circuit with some
  *    shift registers.
+ *  - IBM Host Keyboard: Like the Model M, but with 24 function keys on the top
+ *    and 10 additional keys on the left. Many keys are labeled quite strange,
+ *    but I guess that's common in the host world.
  *
  * Included in the package are circuits for both models, and a firmware that
  * can be compiled separately for each one.
@@ -572,7 +575,7 @@ void calculateSpeed(uint8_t updates) {
  */
 int main(void) {
     uint8_t updateNeeded = 0;
-    uint8_t idleCounter = 0;
+    //uint8_t idleCounter = 0;
     uint8_t updates = 0;
     uint16_t tickcounter = 0;
     wdt_enable(WDTO_2S);