diff --git a/emk_rules.py b/emk_rules.py
index a785fef..b1d76c8 100644
--- a/emk_rules.py
+++ b/emk_rules.py
@@ -1 +1,3 @@
 c, link = emk.module("c", "link")
+
+emk.subdir("test")
diff --git a/ecc_test/ecc_test.ino b/test/ecc_test/ecc_test.ino
similarity index 100%
rename from ecc_test/ecc_test.ino
rename to test/ecc_test/ecc_test.ino
diff --git a/test/emk_rules.py b/test/emk_rules.py
new file mode 100644
index 0000000..956ccf5
--- /dev/null
+++ b/test/emk_rules.py
@@ -0,0 +1,4 @@
+c, link = emk.module("c", "link")
+link.depdirs += [
+    "$:proj:$"
+]
diff --git a/test_ecdh.c b/test/test_ecdh.c
similarity index 100%
rename from test_ecdh.c
rename to test/test_ecdh.c
diff --git a/test_ecdsa.c b/test/test_ecdsa.c
similarity index 100%
rename from test_ecdsa.c
rename to test/test_ecdsa.c