diff --git a/lib/resty/openssl/include/crypto.lua b/lib/resty/openssl/include/crypto.lua
index 6ca1f080..29a6a227 100644
--- a/lib/resty/openssl/include/crypto.lua
+++ b/lib/resty/openssl/include/crypto.lua
@@ -3,6 +3,7 @@ local C = ffi.C
 
 local OPENSSL_10 = require("resty.openssl.version").OPENSSL_10
 local OPENSSL_11_OR_LATER = require("resty.openssl.version").OPENSSL_11_OR_LATER
+local BORINGSSL = require("resty.openssl.version").BORINGSSL
 
 local OPENSSL_free
 if OPENSSL_10 then
@@ -10,6 +11,11 @@ if OPENSSL_10 then
     void CRYPTO_free(void *ptr);
   ]]
   OPENSSL_free = C.CRYPTO_free
+elseif BORINGSSL then
+  ffi.cdef [[
+    void OPENSSL_free(void *ptr);
+  ]]
+  OPENSSL_free = C.OPENSSL_free
 elseif OPENSSL_11_OR_LATER then
   ffi.cdef [[
     void CRYPTO_free(void *ptr, const char *file, int line);