diff --git a/acme/dns_challenge.go b/acme/dns_challenge.go
index e69de29b..8d2a213b 100644
--- a/acme/dns_challenge.go
+++ b/acme/dns_challenge.go
@@ -0,0 +1 @@
+package acme
diff --git a/acme/dvsni_challenge.go b/acme/dvsni_challenge.go
index 8d2a213b..2cdf0c1d 100644
--- a/acme/dvsni_challenge.go
+++ b/acme/dvsni_challenge.go
@@ -1 +1,11 @@
 package acme
+
+type dvsniChallenge struct{}
+
+func (s *dvsniChallenge) CanSolve() bool {
+	return false
+}
+
+func (s *dvsniChallenge) Solve() {
+
+}
diff --git a/acme/simple_http_challenge.go b/acme/simple_http_challenge.go
new file mode 100644
index 00000000..cf203f81
--- /dev/null
+++ b/acme/simple_http_challenge.go
@@ -0,0 +1,11 @@
+package acme
+
+type simpleHTTPChallenge struct{}
+
+func (s *simpleHTTPChallenge) CanSolve() bool {
+	return true
+}
+
+func (s *simpleHTTPChallenge) Solve() {
+
+}
diff --git a/acme/simple_https_challenge.go b/acme/simple_https_challenge.go
deleted file mode 100644
index 8d2a213b..00000000
--- a/acme/simple_https_challenge.go
+++ /dev/null
@@ -1 +0,0 @@
-package acme