diff --git a/src/lib/input.h b/src/lib/input.h
index 4ef352faf..14001ee68 100644
--- a/src/lib/input.h
+++ b/src/lib/input.h
@@ -32,6 +32,7 @@ typedef enum {
     TERMINAL_CONTOUR,       // XTVERSION == 'contour ver'
     TERMINAL_ITERM,         // XTVERSION == 'iTerm2 [ver]'
     TERMINAL_TERMINOLOGY,   // TDA: "~~TY"
+    TERMINAL_APPLE,         // Terminal.App, determined by TERM_PROGRAM + macOS
 } queried_terminals_e;
 
 // sets up the input layer, building a trie of escape sequences and their