diff --git a/firmware/hw_layer/mass_storage/ramdisk_image.h b/firmware/hw_layer/mass_storage/ramdisk_image.h
index 3bdbd9a758..8deaa83801 100644
--- a/firmware/hw_layer/mass_storage/ramdisk_image.h
+++ b/firmware/hw_layer/mass_storage/ramdisk_image.h
@@ -1,4 +1,6 @@
 // This file will be replaced by a ramdisk image containing the corresponding ini
 // Defining this macro tells the ramdisk to instead mount a null device instead of
 // the filesystem image, since we don't have one.
+#ifndef RAMDISK_INVALID
 #define RAMDISK_INVALID
+#endif