diff --git a/openssl/src/lib.rs b/openssl/src/lib.rs
index 4727f3ff193be9941cf312b8e52f647c9c788a0b..bb59d2c53f3e5b811f80a026146f74fea5ae4afa 100644
--- a/openssl/src/lib.rs
+++ b/openssl/src/lib.rs
@@ -166,6 +166,7 @@ pub mod ssl;
 pub mod stack;
 pub mod string;
 pub mod symm;
+pub mod types;
 pub mod version;
 pub mod x509;
 
diff --git a/openssl/src/types.rs b/openssl/src/types.rs
new file mode 100644
index 0000000000000000000000000000000000000000..7598fb428f387e01f938c4611180eb5a965a292f
--- /dev/null
+++ b/openssl/src/types.rs
@@ -0,0 +1,2 @@
+#[cfg(ossl300)]
+pub enum OSSL_LIB_CTX {}