diff --git a/.gitmodules b/.gitmodules
index 0ab2156..84a9c79 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
-[submodule "chisel/difftest"]
-	path = chisel/difftest
-	url = https://github.com/Ciliphen/riscv-difftest.git
+[submodule "difftest"]
+	path = difftest
+	url = git@github.com:Ciliphen/riscv-difftest.git
diff --git a/chisel/difftest b/difftest
similarity index 100%
rename from chisel/difftest
rename to difftest