diff --git a/protocol/adb.c b/protocol/adb.c
index f57afac9..bbff66df 100644
--- a/protocol/adb.c
+++ b/protocol/adb.c
@@ -360,7 +360,7 @@ Commands
     3:  mice
 
     Registers:
-    0: application(keyobard uses this to store its data.)
+    0: application(keyboard uses this to store its data.)
     1: application
     2: application(keyboard uses this for LEDs and state of modifiers)
     3: status and command