diff --git a/openssl-sys/Cargo.toml b/openssl-sys/Cargo.toml
index 5ed9d068..85a6aeb5 100644
--- a/openssl-sys/Cargo.toml
+++ b/openssl-sys/Cargo.toml
@@ -18,6 +18,7 @@ dtlsv1 = []
 dtlsv1_2 = []
 sslv2 = []
 aes_xts = []
+aes_ctr = []
 npn = []
 alpn = []
 
diff --git a/openssl-sys/src/lib.rs b/openssl-sys/src/lib.rs
index 5317ff20..556f3c8d 100644
--- a/openssl-sys/src/lib.rs
+++ b/openssl-sys/src/lib.rs
@@ -397,13 +397,15 @@ extern "C" {
     pub fn EVP_aes_128_ecb() -> *const EVP_CIPHER;
     #[cfg(feature = "aes_xts")]
     pub fn EVP_aes_128_xts() -> *const EVP_CIPHER;
-    // fn EVP_aes_128_ctr() -> EVP_CIPHER;
+    #[cfg(feature = "aes_ctr")]
+    pub fn EVP_aes_128_ctr() -> *const EVP_CIPHER;
     // fn EVP_aes_128_gcm() -> EVP_CIPHER;
     pub fn EVP_aes_256_cbc() -> *const EVP_CIPHER;
     pub fn EVP_aes_256_ecb() -> *const EVP_CIPHER;
     #[cfg(feature = "aes_xts")]
     pub fn EVP_aes_256_xts() -> *const EVP_CIPHER;
-    // fn EVP_aes_256_ctr() -> EVP_CIPHER;
+    #[cfg(feature = "aes_ctr")]
+    pub fn EVP_aes_256_ctr() -> *const EVP_CIPHER;
     // fn EVP_aes_256_gcm() -> EVP_CIPHER;
     pub fn EVP_rc4() -> *const EVP_CIPHER;
 
diff --git a/openssl/Cargo.toml b/openssl/Cargo.toml
index 8a6b4ddc..c230aa04 100644
--- a/openssl/Cargo.toml
+++ b/openssl/Cargo.toml
@@ -16,6 +16,7 @@ dtlsv1 = ["openssl-sys/dtlsv1"]
 dtlsv1_2 = ["openssl-sys/dtlsv1_2"]
 sslv2 = ["openssl-sys/sslv2"]
 aes_xts = ["openssl-sys/aes_xts"]
+aes_ctr = ["openssl-sys/aes_ctr"]
 npn = ["openssl-sys/npn"]
 alpn = ["openssl-sys/alpn"]
 
diff --git a/openssl/src/crypto/symm.rs b/openssl/src/crypto/symm.rs
index 82c668ba..79cffcc6 100644
--- a/openssl/src/crypto/symm.rs
+++ b/openssl/src/crypto/symm.rs
@@ -18,7 +18,8 @@ pub enum Type {
     /// Requires the `aes_xts` feature
     #[cfg(feature = "aes_xts")]
     AES_128_XTS,
-    // AES_128_CTR,
+    #[cfg(feature = "aes_ctr")]
+    AES_128_CTR,
     //AES_128_GCM,
 
     AES_256_ECB,
@@ -26,7 +27,8 @@ pub enum Type {
     /// Requires the `aes_xts` feature
     #[cfg(feature = "aes_xts")]
     AES_256_XTS,
-    // AES_256_CTR,
+    #[cfg(feature = "aes_ctr")]
+    AES_256_CTR,
     //AES_256_GCM,
 
     RC4_128,
@@ -39,14 +41,16 @@ fn evpc(t: Type) -> (*const ffi::EVP_CIPHER, u32, u32) {
             Type::AES_128_CBC => (ffi::EVP_aes_128_cbc(), 16, 16),
             #[cfg(feature = "aes_xts")]
             Type::AES_128_XTS => (ffi::EVP_aes_128_xts(), 32, 16),
-            // AES_128_CTR => (EVP_aes_128_ctr(), 16, 0),
+            #[cfg(feature = "aes_ctr")]
+            Type::AES_128_CTR => (ffi::EVP_aes_128_ctr(), 16, 0),
             //AES_128_GCM => (EVP_aes_128_gcm(), 16, 16),
 
             Type::AES_256_ECB => (ffi::EVP_aes_256_ecb(), 32, 16),
             Type::AES_256_CBC => (ffi::EVP_aes_256_cbc(), 32, 16),
             #[cfg(feature = "aes_xts")]
             Type::AES_256_XTS => (ffi::EVP_aes_256_xts(), 64, 16),
-            // AES_256_CTR => (EVP_aes_256_ctr(), 32, 0),
+            #[cfg(feature = "aes_ctr")]
+            Type::AES_256_CTR => (ffi::EVP_aes_256_ctr(), 32, 0),
             //AES_256_GCM => (EVP_aes_256_gcm(), 32, 16),
 
             Type::RC4_128 => (ffi::EVP_rc4(), 16, 0),
@@ -288,16 +292,17 @@ mod tests {
         cipher_test(super::Type::AES_256_XTS, pt, ct, key, iv);
     }
 
-    /*#[test]
+    #[test]
+    #[cfg(feature = "aes_ctr")]
     fn test_aes128_ctr() {
 
-        let pt = ~"6BC1BEE22E409F96E93D7E117393172AAE2D8A571E03AC9C9EB76FAC45AF8E5130C81C46A35CE411E5FBC1191A0A52EFF69F2445DF4F9B17AD2B417BE66C3710";
-        let ct = ~"874D6191B620E3261BEF6864990DB6CE9806F66B7970FDFF8617187BB9FFFDFF5AE4DF3EDBD5D35E5B4F09020DB03EAB1E031DDA2FBE03D1792170A0F3009CEE";
-        let key = ~"2B7E151628AED2A6ABF7158809CF4F3C";
-        let iv = ~"F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF";
+        let pt = "6BC1BEE22E409F96E93D7E117393172AAE2D8A571E03AC9C9EB76FAC45AF8E5130C81C46A35CE411E5FBC1191A0A52EFF69F2445DF4F9B17AD2B417BE66C3710";
+        let ct = "874D6191B620E3261BEF6864990DB6CE9806F66B7970FDFF8617187BB9FFFDFF5AE4DF3EDBD5D35E5B4F09020DB03EAB1E031DDA2FBE03D1792170A0F3009CEE";
+        let key = "2B7E151628AED2A6ABF7158809CF4F3C";
+        let iv = "F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF";
 
-        cipher_test(super::AES_128_CTR, pt, ct, key, iv);
-    }*/
+        cipher_test(super::Type::AES_128_CTR, pt, ct, key, iv);
+    }
 
     /*#[test]
     fn test_aes128_gcm() {