diff --git a/src/termdefs.h b/src/termdefs.h
index 9f72dc1..f28fd19 100644
--- a/src/termdefs.h
+++ b/src/termdefs.h
@@ -114,10 +114,11 @@
     KS_SSI,	// save icon text
     KS_SRI,	// restore icon text
     KS_FD,	// disable focus event tracking
-    KS_FE	// enable focus event tracking
+    KS_FE,	// enable focus event tracking
+    KS_CF	// set terminal alternate font
 };
 
-#define KS_LAST	    KS_FE
+#define KS_LAST	    KS_CF
 
 /*
  * the terminal capabilities are stored in this array
@@ -191,6 +192,7 @@
 #define T_CAF	(TERM_STR(KS_CAF))	// set foreground color (ANSI)
 #define T_CAB	(TERM_STR(KS_CAB))	// set background color (ANSI)
 #define T_CAU	(TERM_STR(KS_CAU))	// set underline color (ANSI)
+#define T_CFO	(TERM_STR(KS_CF))	// set alternate font
 #define T_LE	(TERM_STR(KS_LE))	// cursor left
 #define T_ND	(TERM_STR(KS_ND))	// cursor right
 #define T_CIS	(TERM_STR(KS_CIS))	// set icon text start