(XTread_socket): Generate SELECT_WINDOW_EVENTs only for Emacs windows.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/xterm.c b/src/xterm.c
index 73e987531a9..7962d1b4d53 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -10890,7 +10890,8 @@ XTread_socket (sd, bufp, numchars, expected)
                         /* Window will be selected only when it is not selected now and
                            last mouse movement event was not in it.  Minibuffer window
                            will be selected iff it is active.  */
-                        if (!EQ (window, last_window)
+                        if (WINDOWP(window)
+                            && !EQ (window, last_window)
                             && !EQ (window, selected_window)
                             && numchars > 0)
                           {