diff --git a/src/input.zig b/src/input.zig
index b80eb0d..c1c982a 100644
--- a/src/input.zig
+++ b/src/input.zig
@@ -171,8 +171,8 @@ pub const KpLeft: u21 = 57417;
 pub const KpRight: u21 = 57418;
 pub const KpUp: u21 = 57419;
 pub const KpDown: u21 = 57420;
-pub const KpPage_up: u21 = 57421;
-pub const KpPage_down: u21 = 57422;
+pub const KpPage_Up: u21 = 57421;
+pub const KpPage_Down: u21 = 57422;
 pub const KpHome: u21 = 57423;
 pub const KpEnd: u21 = 57424;
 pub const KpInsert: u21 = 57425;