diff --git a/terminatorlib/keybindings.py b/terminatorlib/keybindings.py
index 0bda431b..f9939cfa 100644
--- a/terminatorlib/keybindings.py
+++ b/terminatorlib/keybindings.py
@@ -36,6 +36,7 @@ class Keybindings:
     modifiers = {
         'ctrl':     gtk.gdk.CONTROL_MASK,
         'control':  gtk.gdk.CONTROL_MASK,
+        'primary':  gtk.gdk.CONTROL_MASK,
         'shift':    gtk.gdk.SHIFT_MASK,
         'alt':      gtk.gdk.MOD1_MASK,
         'super':    gtk.gdk.SUPER_MASK,