diff --git a/lib/hub.c b/lib/hub.c
index da92491..944173d 100644
--- a/lib/hub.c
+++ b/lib/hub.c
@@ -830,7 +830,7 @@ int _sxhub_settls_ctx_s(sxhub_t *hub)
   /* set the local certificate from CertFile */
   if(SSL_CTX_use_certificate_file(hub->ctx, hub->certpem, SSL_FILETYPE_PEM) <= 0) return SXE_ESSL;
   /* set the private key from KeyFile (may be the same as CertFile) */
-  if(SSL_CTX_use_PrivateKey_file(hub->ctx, hub->certpem, SSL_FILETYPE_PEM) <= 0) return SXE_ESSL;
+  if(SSL_CTX_use_PrivateKey_file(hub->ctx, hub->certkey, SSL_FILETYPE_PEM) <= 0) return SXE_ESSL;
   /* verify private key */
   if (!SSL_CTX_check_private_key(hub->ctx)) return SXE_ESSL;