diff --git a/GB_set_key_state.md b/GB_set_key_state.md
index 04f0ce6..c3c6f37 100644
--- a/GB_set_key_state.md
+++ b/GB_set_key_state.md
@@ -6,7 +6,7 @@ In `joypad.h`
 
 ## Description
 
-Sets the state for button `index` to value `pressed` (`true` means down, `false` means released).
+Sets the state for player 1's button `index` to value `pressed` (`true` means down, `false` means released).
 
 ## Thread Safety