diff --git a/gdk/broadway/broadway.js b/gdk/broadway/broadway.js
index bec7343b97..21554546c2 100644
--- a/gdk/broadway/broadway.js
+++ b/gdk/broadway/broadway.js
@@ -79,10 +79,6 @@ const GDK_SHIFT_MASK    = 1 << 0;
 const GDK_LOCK_MASK     = 1 << 1;
 const GDK_CONTROL_MASK  = 1 << 2;
 const GDK_ALT_MASK      = 1 << 3;
-const GDK_MOD2_MASK     = 1 << 4;
-const GDK_MOD3_MASK     = 1 << 5;
-const GDK_MOD4_MASK     = 1 << 6;
-const GDK_MOD5_MASK     = 1 << 7;
 const GDK_BUTTON1_MASK  = 1 << 8;
 const GDK_BUTTON2_MASK  = 1 << 9;
 const GDK_BUTTON3_MASK  = 1 << 10;