diff --git a/input-keys.c b/input-keys.c
index 611592b4..b7c02ccd 100644
--- a/input-keys.c
+++ b/input-keys.c
@@ -340,7 +340,7 @@ static const key_code input_key_modifiers[] = {
 	KEYC_CTRL,
 	KEYC_SHIFT|KEYC_CTRL,
 	KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL,
-	KEYC_SHIFT|KEYC_META|KEYC_CTRL
+	KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL
 };
 
 /* Input key comparison function. */
diff --git a/tty-keys.c b/tty-keys.c
index 3764421b..41253d67 100644
--- a/tty-keys.c
+++ b/tty-keys.c
@@ -231,7 +231,7 @@ static const key_code tty_default_xterm_modifiers[] = {
 	KEYC_CTRL,
 	KEYC_SHIFT|KEYC_CTRL,
 	KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL,
-	KEYC_SHIFT|KEYC_META|KEYC_CTRL
+	KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL
 };
 
 /*