diff --git a/artiq/firmware/satman/Makefile b/artiq/firmware/satman/Makefile
index 1f441c018..7c3885c87 100644
--- a/artiq/firmware/satman/Makefile
+++ b/artiq/firmware/satman/Makefile
@@ -5,6 +5,8 @@ LDFLAGS += -L../libbase
 
 RUSTFLAGS += -Cpanic=abort
 
+export XBUILD_SYSROOT_PATH=$(BUILDINC_DIRECTORY)/../sysroot
+
 all:: satman.bin satman.fbi
 
 .PHONY: $(RUSTOUT)/libsatman.a