diff --git a/IPython/lib/inputhookgtk3.py b/IPython/lib/inputhookgtk3.py
index 531f5ca..d897e19 100644
--- a/IPython/lib/inputhookgtk3.py
+++ b/IPython/lib/inputhookgtk3.py
@@ -29,6 +29,6 @@ def _main_quit(*args, **kwargs):
 
 
 def inputhook_gtk3():
-    GLib.io_add_watch(sys.stdin, GLib.IO_IN, _main_quit)
+    GLib.io_add_watch(sys.stdin, GLib.PRIORITY_DEFAULT, GLib.IO_IN, _main_quit)
     Gtk.main()
     return 0
diff --git a/IPython/terminal/pt_inputhooks/gtk3.py b/IPython/terminal/pt_inputhooks/gtk3.py
index 5c6c545..ae82b4e 100644
--- a/IPython/terminal/pt_inputhooks/gtk3.py
+++ b/IPython/terminal/pt_inputhooks/gtk3.py
@@ -8,5 +8,5 @@ def _main_quit(*args, **kwargs):
     return False
 
 def inputhook(context):
-    GLib.io_add_watch(context.fileno(), GLib.IO_IN, _main_quit)
+    GLib.io_add_watch(context.fileno(), GLib.PRIORITY_DEFAULT, GLib.IO_IN, _main_quit)
     Gtk.main()