diff --git a/config/flea.keymap b/config/flea.keymap
index 74243fc..c321991 100644
--- a/config/flea.keymap
+++ b/config/flea.keymap
@@ -127,6 +127,7 @@
         COMBO(del, &kp DEL, 4 5, DEF_L)
         COMBO(tab, &kp TAB, 9 10, DEF_L)
         COMBO(select_all, &kp LC(A), 19 20, NAV_L)
+        COMBO(tmux_prefix, &kp LC(B), 22 24, DEF_L UPP_L SYM_L NUM_L)
 
 
         COMBO(geq, &geq, 0 2, DEF_L)