From dc6c977766a28c26075ff2b5268b3ee1c9660035 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Sun, 18 Apr 2021 17:12:56 -0500
Subject: [PATCH] Fix CHDK warning

---
 Marlin/src/MarlinCore.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Marlin/src/MarlinCore.cpp b/Marlin/src/MarlinCore.cpp
index 2e1eab86d..1405f2033 100644
--- a/Marlin/src/MarlinCore.cpp
+++ b/Marlin/src/MarlinCore.cpp
@@ -453,7 +453,8 @@ inline void manage_inactivity(const bool ignore_stepper_queue=false) {
       already_shutdown_steppers = false;
   }
 
-  #if PIN_EXISTS(CHDK) // Check if pin should be set to LOW (after M240 set it HIGH)
+  #if ENABLED(PHOTO_GCODE) && PIN_EXISTS(CHDK)
+    // Check if CHDK should be set to LOW (after M240 set it HIGH)
     extern millis_t chdk_timeout;
     if (chdk_timeout && ELAPSED(ms, chdk_timeout)) {
       chdk_timeout = 0;