diff --git a/src/zdatachannel_service.c b/src/zdatachannel_service.c
index a11367d..9860e01 100644
--- a/src/zdatachannel_service.c
+++ b/src/zdatachannel_service.c
@@ -21,7 +21,7 @@
   } /**< Used vendor specific UUID. */
 
 static zdatachannel_t *p_datachannel;
-static uint32_t        m_mtusize;
+//static uint32_t        m_mtusize;
 
 static bool notification_enable(uint16_t conn_handle, uint16_t cccd_handle) {
   ret_code_t        err_code;