diff --git a/settings.c b/settings.c
index 24b4e90..8173698 100644
--- a/settings.c
+++ b/settings.c
@@ -897,6 +897,9 @@ buf[1] = 0
 #ifdef ENABLE_AM_FIX
     | (1 << 4)
 #endif
+#ifdef ENABLE_SPECTRUM
+    | (1 << 5)
+#endif
 ;
 	EEPROM_WriteBuffer(0x1FF0, buf);
 }
\ No newline at end of file