diff --git a/sw/ext/Makefile b/sw/ext/Makefile
index 61a6d800de..5afc1bb7fc 100644
--- a/sw/ext/Makefile
+++ b/sw/ext/Makefile
@@ -56,7 +56,7 @@ libopencm3.module: update_submodules
 	$(Q)$(MAKE) -C libopencm3 lib PREFIX=$(PREFIX)
 
 luftboot.module: update_submodules libopencm3.module
-	$(Q)$(MAKE) -C luftboot/src all LIBOPENCM3=../../libopencm3
+	$(Q)$(MAKE) -C luftboot/src all LIBOPENCM3=../../libopencm3 PREFIX=$(PREFIX)
 
 clean:
 	$(Q)if [ -f libopencm3/Makefile ]; then \
diff --git a/sw/ext/luftboot b/sw/ext/luftboot
index 2205fe1cb9..c2d350156a 160000
--- a/sw/ext/luftboot
+++ b/sw/ext/luftboot
@@ -1 +1 @@
-Subproject commit 2205fe1cb9f1f2f6f78649b2fd653b12da5d75e0
+Subproject commit c2d350156aeeae9fb4f5cfc1e314dbb1bb9de611