diff --git a/src/c/main.d b/src/c/main.d
index 74e4f7836..dd4530f35 100644
--- a/src/c/main.d
+++ b/src/c/main.d
@@ -111,6 +111,7 @@ static const struct {
 	{"Em", 25},
 	{"Sub", 26},
 	{"Escape", 27},
+	{"Esc", 27},
 	{"Fs", 28},
 	{"Gs", 29},
 	{"Rs", 30},