diff --git a/shadowsocks/crypto/mbedtls.py b/shadowsocks/crypto/mbedtls.py
index b87c2eb..1954a86 100644
--- a/shadowsocks/crypto/mbedtls.py
+++ b/shadowsocks/crypto/mbedtls.py
@@ -408,22 +408,20 @@ ciphers = {
 
 
 def run_method(method):
-    from shadowsocks.crypto import openssl
 
     print(method, ': [stream]', 32)
     cipher = MbedTLSStreamCrypto(method, b'k' * 32, b'i' * 16, 1)
-    decipher = openssl.OpenSSLStreamCrypto(method, b'k' * 32, b'i' * 16, 0)
+    decipher = MbedTLSStreamCrypto(method, b'k' * 32, b'i' * 16, 0)
 
     util.run_cipher(cipher, decipher)
 
 
 def run_aead_method(method, key_len=16):
-    from shadowsocks.crypto import openssl
 
     print(method, ': [payload][tag]', key_len)
     key_len = int(key_len)
     cipher = MbedTLSAeadCrypto(method, b'k' * key_len, b'i' * key_len, 1)
-    decipher = openssl.OpenSSLAeadCrypto(
+    decipher = MbedTLSAeadCrypto(
         method,
         b'k' * key_len, b'i' * key_len, 0
     )
@@ -432,12 +430,11 @@ def run_aead_method(method, key_len=16):
 
 
 def run_aead_method_chunk(method, key_len=16):
-    from shadowsocks.crypto import openssl
 
     print(method, ': chunk([size][tag][payload][tag]', key_len)
     key_len = int(key_len)
     cipher = MbedTLSAeadCrypto(method, b'k' * key_len, b'i' * key_len, 1)
-    decipher = openssl.OpenSSLAeadCrypto(
+    decipher = MbedTLSAeadCrypto(
         method,
         b'k' * key_len, b'i' * key_len, 0
     )
diff --git a/shadowsocks/crypto/openssl.py b/shadowsocks/crypto/openssl.py
index f034bd1..ff63541 100644
--- a/shadowsocks/crypto/openssl.py
+++ b/shadowsocks/crypto/openssl.py
@@ -346,6 +346,8 @@ def run_method(method):
 
 def run_aead_method(method, key_len=16):
 
+    if not loaded:
+        load_openssl(None)
     print(method, ': [payload][tag]', key_len)
     cipher = libcrypto.EVP_get_cipherbyname(common.to_bytes(method))
     if not cipher:
@@ -362,6 +364,8 @@ def run_aead_method(method, key_len=16):
 
 def run_aead_method_chunk(method, key_len=16):
 
+    if not loaded:
+        load_openssl(None)
     print(method, ': chunk([size][tag][payload][tag]', key_len)
     cipher = libcrypto.EVP_get_cipherbyname(common.to_bytes(method))
     if not cipher:
diff --git a/tests/libopenssl/install.sh b/tests/libopenssl/install.sh
index e948bff..480c772 100755
--- a/tests/libopenssl/install.sh
+++ b/tests/libopenssl/install.sh
@@ -10,3 +10,10 @@ pushd openssl-$OPENSSL_VER
 # sudo ldconfig  # test multiple libcrypto
 popd
 rm -rf openssl-$OPENSSL_VER || exit 1
+
+rm /usr/bin/openssl || exit 1
+rm -r /usr/include/openssl || exit 1
+ln -s /usr/local/bin/openssl /usr/bin/openssl || exit 1
+ln -s /usr/local/include/openssl /usr/include/openssl || exit 1
+echo /usr/local/lib >> /etc/ld.so.conf || exit 1
+ldconfig -v || exit 1