diff --git a/Marlin/src/HAL/NATIVE_SIM/fastio.h b/Marlin/src/HAL/NATIVE_SIM/fastio.h
index f501afdbaa..e0b7af09f9 100644
--- a/Marlin/src/HAL/NATIVE_SIM/fastio.h
+++ b/Marlin/src/HAL/NATIVE_SIM/fastio.h
@@ -28,6 +28,8 @@
 #include "../shared/Marduino.h"
 #include <pinmapping.h>
 
+#define NO_COMPILE_TIME_PWM
+
 #define SET_DIR_INPUT(IO)     Gpio::setDir(IO, 1)
 #define SET_DIR_OUTPUT(IO)    Gpio::setDir(IO, 0)
 
diff --git a/Marlin/src/inc/Warnings.cpp b/Marlin/src/inc/Warnings.cpp
index ac5aab6efc..be617aa2e8 100644
--- a/Marlin/src/inc/Warnings.cpp
+++ b/Marlin/src/inc/Warnings.cpp
@@ -944,8 +944,8 @@
   #if ANY(BIQU_MICROPROBE_V1, BIQU_MICROPROBE_V2)
     #warning "Let us know if you experience any issues with BIQU Microprobe and FT_MOTION."
   #endif
-  #if DELAY_BEFORE_PROBING <= 25
-    #warning "A DELAY_BEFORE_PROBING over 25 ms is recommended with FT_MOTION."
+  #if PROBE_WAKEUP_TIME_MS < 30
+    #warning "A PROBE_WAKEUP_TIME_MS over 30 ms is recommended with FT_MOTION."
   #endif
 #endif
 
diff --git a/Marlin/src/sd/cardreader.cpp b/Marlin/src/sd/cardreader.cpp
index 24ee80a2cc..a2c0da933c 100644
--- a/Marlin/src/sd/cardreader.cpp
+++ b/Marlin/src/sd/cardreader.cpp
@@ -1378,6 +1378,13 @@ void CardReader::cdroot() {
           #endif
         #endif
 
+      #else // !SDSORT_USES_RAM
+
+        // By default re-read the names from SD for every compare
+        // retaining only two filenames at a time. This is very
+        // slow but is safest and uses minimal RAM.
+        char name1[LONG_FILENAME_LENGTH];
+
       #endif // SDSORT_USES_RAM
 
       if (fileCnt > 1) {