diff --git a/Cargo.lock b/Cargo.lock
index 1f71767f2..f5df5fad0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -918,7 +918,7 @@ dependencies = [
 [[package]]
 name = "redoxer"
 version = "0.2.63"
-source = "git+https://gitlab.redox-os.org/redox-os/redoxer.git#af96492e69e0563c9d42847ec4f5a118e8ec6544"
+source = "git+https://gitlab.redox-os.org/redox-os/redoxer.git#f50e0d7f490b60110ee6494a06d9b2f9981f8a5a"
 dependencies = [
  "anyhow",
  "dirs",
diff --git a/mk/prefix.mk b/mk/prefix.mk
index a58851568..e1ced0a92 100644
--- a/mk/prefix.mk
+++ b/mk/prefix.mk
@@ -456,7 +456,7 @@ else
 		COOKBOOK_HOST_SYSROOT=/usr COOKBOOK_CROSS_TARGET=$(HOST_TARGET) REDOXER_USE_CLANG=1 && \
 		$(REPO_BIN) cook llvm-rt21
 	cp -r "$(LLVM_RT_TARGET)/stage/usr/". "$@.partial"
-	echo "--sysroot=../$(GNU_TARGET)" > "$@.partial/bin/$(GNU_TARGET).cfg"
+	echo "--sysroot=<CFGDIR>/../$(GNU_TARGET)" > "$@.partial/bin/$(GNU_TARGET).cfg"
 	mv "$@.partial" "$@"
 # no longer needed, delete build files to save disk space
 	rm -rf $(CLANG_TARGET) $(LLD_TARGET) $(LLVM_RT_TARGET)