From d26d9d5b81fcbbb2e5f8eb8c92fbb6e679de9349 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Fri, 19 Oct 2018 13:59:50 -0500
Subject: [PATCH] Tweak IS_SD_INSERTED

---
 Marlin/src/sd/cardreader.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Marlin/src/sd/cardreader.h b/Marlin/src/sd/cardreader.h
index 675c3adf4..42e35656f 100644
--- a/Marlin/src/sd/cardreader.h
+++ b/Marlin/src/sd/cardreader.h
@@ -247,9 +247,9 @@ private:
   #define IS_SD_INSERTED() Sd2Card::isInserted()
 #elif PIN_EXISTS(SD_DETECT)
   #if ENABLED(SD_DETECT_INVERTED)
-    #define IS_SD_INSERTED() (READ(SD_DETECT_PIN) == HIGH)
+    #define IS_SD_INSERTED()  READ(SD_DETECT_PIN)
   #else
-    #define IS_SD_INSERTED() (READ(SD_DETECT_PIN) == LOW)
+    #define IS_SD_INSERTED() !READ(SD_DETECT_PIN)
   #endif
 #else
   // No card detect line? Assume the card is inserted.