diff --git a/include/constructor.cpp b/include/constructor.cpp
index 30dae4b..8cfe992 100644
--- a/include/constructor.cpp
+++ b/include/constructor.cpp
@@ -78,6 +78,7 @@ mouse_m908::mouse_m908(){
 		{ "right", { 0x82, 0x00, 0x00 } },
 		{ "middle", { 0x83, 0x00, 0x00 } },
 		{ "profile_switch", { 0x8d, 0x00, 0x00 } },
+		{ "led_mode_switch", { 0x9b, 0x04, 0x00 } },
 		{ "macro1", { 0x91, 0x00, 0x01 } },
 		{ "macro2", { 0x91, 0x01, 0x01 } },
 		{ "macro3", { 0x91, 0x02, 0x01 } },
diff --git a/keymap.md b/keymap.md
index 7d1949d..80eeffe 100644
--- a/keymap.md
+++ b/keymap.md
@@ -45,6 +45,7 @@ left
 right
 middle
 profile_switch
+led_mode_switch
 none
 
 ## Macros (see README.md)