From cdbe16ea96c0831f1f5e2d2230bef9389c819219 Mon Sep 17 00:00:00 2001
From: BryceMehring <brycemehring@gmail.com>
Date: Sun, 22 Feb 2015 22:14:24 -0600
Subject: [PATCH] Fixed mouse button mismatch in x11 introduced via
 4d146cb39dd2e08a7df7fea97d01c6f1a1d5a98e.

---
 src/x11_window.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/x11_window.c b/src/x11_window.c
index ad9edf79f..b88691ef0 100644
--- a/src/x11_window.c
+++ b/src/x11_window.c
@@ -1049,7 +1049,7 @@ static void processEvent(XEvent *event)
                 // Additional buttons after 7 are treated as regular buttons
                 // We subtract 4 to fill the gap left by scroll input above
                 _glfwInputMouseClick(window,
-                                     event->xbutton.button - 4,
+                                     event->xbutton.button - Button1 - 4,
                                      GLFW_RELEASE,
                                      mods);
             }