diff --git a/src/win32_joystick.c b/src/win32_joystick.c
index 6da81f7a..ad2dbb2f 100644
--- a/src/win32_joystick.c
+++ b/src/win32_joystick.c
@@ -66,8 +66,6 @@ static const GUID _glfw_GUID_RzAxis =
     {0xa36d02e3,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
 static const GUID _glfw_GUID_Slider =
     {0xa36d02e4,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
-static const GUID _glfw_GUID_Button =
-    {0xa36d02f0,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
 static const GUID _glfw_GUID_POV =
     {0xa36d02f2,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
 
@@ -79,7 +77,6 @@ static const GUID _glfw_GUID_POV =
 #define GUID_RyAxis _glfw_GUID_RyAxis
 #define GUID_RzAxis _glfw_GUID_RzAxis
 #define GUID_Slider _glfw_GUID_Slider
-#define GUID_Button _glfw_GUID_Button
 #define GUID_POV _glfw_GUID_POV
 
 // Object data array for our clone of c_dfDIJoystick