diff --git a/src/lib.rs b/src/lib.rs
index 80edc5d72..66c492b1f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -107,6 +107,8 @@ pub fn init() {
     )]
     extern "C" fn init_inner() {
         INIT.call_once(|| {
+            #[cfg(need_openssl_init)]
+            openssl_probe::init_ssl_cert_env_vars();
             #[cfg(need_openssl_init)]
             openssl_sys::init();