diff --git a/src/node_crypto.h b/src/node_crypto.h
index f46e77d6bcb483..a2b8cb7a8872eb 100644
--- a/src/node_crypto.h
+++ b/src/node_crypto.h
@@ -476,7 +476,7 @@ class CipherBase : public BaseObject {
  private:
   EVP_CIPHER_CTX ctx_; /* coverity[member_decl] */
   bool initialised_;
-  CipherKind kind_;
+  const CipherKind kind_;
   unsigned int auth_tag_len_;
   char auth_tag_[EVP_GCM_TLS_TAG_LEN];
 };