diff --git a/examples/c_ffi_example/quic_main.c b/examples/c_ffi_example/quic_main.c
index 89db43bf..071b03b4 100644
--- a/examples/c_ffi_example/quic_main.c
+++ b/examples/c_ffi_example/quic_main.c
@@ -20,6 +20,7 @@ typedef struct {
   const char *ca_cert_file;
   const char *client_cert_file;
   const char *client_key_file;
+  const char *alpn;
   uint8_t insecure_skip_verify;
 } MqttTlsOptionsC;
 
diff --git a/examples/c_ffi_example/tls_main.c b/examples/c_ffi_example/tls_main.c
index 92cfc821..e7bf9831 100644
--- a/examples/c_ffi_example/tls_main.c
+++ b/examples/c_ffi_example/tls_main.c
@@ -21,6 +21,7 @@ typedef struct {
   const char *ca_cert_file;
   const char *client_cert_file;
   const char *client_key_file;
+  const char *alpn;
   uint8_t insecure_skip_verify;
 } MqttTlsOptionsC;