diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index 2bde7f6f4542..9fb5b0e445f9 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -1829,19 +1829,25 @@ static_assert(COUNT(arm) == LOGICAL_AXES, "AXIS_RELATIVE_MODES must contain " _L
 #undef GOOD_AXIS_PINS
 
 /**
- * Make sure auto fan pins don't conflict with the fan pin
+ * Make sure auto fan pins don't conflict with the first fan pin
  */
 #if HAS_AUTO_FAN
-  #if HAS_FAN0
-    #if PIN_EXISTS(E0_AUTO_FAN) && E0_AUTO_FAN_PIN == FAN0_PIN
-      #error "You cannot set E0_AUTO_FAN_PIN equal to FAN0_PIN."
-    #elif PIN_EXISTS(E1_AUTO_FAN) && E1_AUTO_FAN_PIN == FAN0_PIN
-      #error "You cannot set E1_AUTO_FAN_PIN equal to FAN0_PIN."
-    #elif PIN_EXISTS(E2_AUTO_FAN) && E2_AUTO_FAN_PIN == FAN0_PIN
-      #error "You cannot set E2_AUTO_FAN_PIN equal to FAN0_PIN."
-    #elif PIN_EXISTS(E3_AUTO_FAN) &&  E3_AUTO_FAN_PIN == FAN0_PIN
-      #error "You cannot set E3_AUTO_FAN_PIN equal to FAN0_PIN."
-    #endif
+  #if PINS_EXIST(E0_AUTO_FAN, FAN0) && E0_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E0_AUTO_FAN_PIN equal to FAN0_PIN."
+  #elif PINS_EXIST(E1_AUTO_FAN, FAN0) && E1_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E1_AUTO_FAN_PIN equal to FAN0_PIN."
+  #elif PINS_EXIST(E2_AUTO_FAN, FAN0) && E2_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E2_AUTO_FAN_PIN equal to FAN0_PIN."
+  #elif PINS_EXIST(E3_AUTO_FAN, FAN0) &&  E3_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E3_AUTO_FAN_PIN equal to FAN0_PIN."
+  #elif PINS_EXIST(E4_AUTO_FAN, FAN0) &&  E4_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E4_AUTO_FAN_PIN equal to FAN0_PIN."
+  #elif PINS_EXIST(E5_AUTO_FAN, FAN0) &&  E5_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E5_AUTO_FAN_PIN equal to FAN0_PIN."
+  #elif PINS_EXIST(E6_AUTO_FAN, FAN0) &&  E6_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E6_AUTO_FAN_PIN equal to FAN0_PIN."
+  #elif PINS_EXIST(E7_AUTO_FAN, FAN0) &&  E7_AUTO_FAN_PIN == FAN0_PIN
+    #error "You cannot set E7_AUTO_FAN_PIN equal to FAN0_PIN."
   #endif
 #endif
 
diff --git a/Marlin/src/pins/mega/pins_MALYAN_M180.h b/Marlin/src/pins/mega/pins_MALYAN_M180.h
index 4eb7928825cd..a4bc98a14706 100644
--- a/Marlin/src/pins/mega/pins_MALYAN_M180.h
+++ b/Marlin/src/pins/mega/pins_MALYAN_M180.h
@@ -96,7 +96,6 @@
 #ifndef FAN0_PIN
   #define FAN0_PIN                             7  // M106 Sxxx command supported and tested. M107 as well.
 #endif
-
-#ifndef FAN_PIN1
-  #define FAN_PIN1                            12  // Currently Unsupported by Marlin
+#ifndef FAN1_PIN
+  #define FAN1_PIN                            12  // Currently Unsupported by Marlin
 #endif