diff --git a/boring/src/ssl/mod.rs b/boring/src/ssl/mod.rs
index 08ee28f3..603ae2d7 100644
--- a/boring/src/ssl/mod.rs
+++ b/boring/src/ssl/mod.rs
@@ -3677,6 +3677,10 @@ impl SslRef {
     {
         unsafe { cvt(ffi::SSL_use_PrivateKey(self.as_ptr(), key.as_ptr())).map(|_| ()) }
     }
+
+    pub fn clear_mode(&mut self, mode: u32) -> u32 {
+        unsafe { ffi::SSL_clear_mode(self.as_ptr(), mode) }
+    }
 }
 
 /// An SSL stream midway through the handshake process.