diff --git a/Marlin/src/sd/cardreader.cpp b/Marlin/src/sd/cardreader.cpp
index 94da23806253..822f6a857cf6 100644
--- a/Marlin/src/sd/cardreader.cpp
+++ b/Marlin/src/sd/cardreader.cpp
@@ -143,9 +143,9 @@ uint32_t CardReader::filesize, CardReader::sdpos;
 
 CardReader::CardReader() {
   changeMedia(&
-    #if ENABLED(MULTI_VOLUME) && SHARED_VOLUME_IS(SD_ONBOARD)
+    #if SHARED_VOLUME_IS(SD_ONBOARD)
       sd2card_sd_spi
-    #elif (ENABLED(MULTI_VOLUME) && SHARED_VOLUME_IS(USB_FLASH_DRIVE)) || ENABLED(USB_FLASH_DRIVE_SUPPORT)
+    #elif SHARED_VOLUME_IS(USB_FLASH_DRIVE) || ENABLED(USB_FLASH_DRIVE_SUPPORT)
       sd2card_UsbFlashDrive
     #else
       TERN(SDIO_SUPPORT, sd2card_sdio, sd2card_sd_spi)
diff --git a/Marlin/src/sd/cardreader.h b/Marlin/src/sd/cardreader.h
index 8eb346fac37c..d0f215cfc162 100644
--- a/Marlin/src/sd/cardreader.h
+++ b/Marlin/src/sd/cardreader.h
@@ -62,6 +62,8 @@ extern const char M23_STR[], M24_STR[];
   #if !SHARED_VOLUME_IS(SD_ONBOARD) && !SHARED_VOLUME_IS(USB_FLASH_DRIVE)
     #error "DEFAULT_SHARED_VOLUME must be either SD_ONBOARD or USB_FLASH_DRIVE."
   #endif
+#else
+  #define SHARED_VOLUME_IS(...) 0
 #endif
 
 typedef struct {