diff --git a/addons/ooh323c/src/ooCalls.h b/addons/ooh323c/src/ooCalls.h
index bbba91c93d..fa2fbc8fd7 100644
--- a/addons/ooh323c/src/ooCalls.h
+++ b/addons/ooh323c/src/ooCalls.h
@@ -224,7 +224,7 @@ typedef struct OOH323CallData {
    char			lastDTMF;
    ASN1UINT		nextDTMFstamp;
    int			rtdrInterval, rtdrCount;	/* roundTripDelay interval and unreplied count */
-   ASN1UINT		rtdrSend, rtdrRecv;		/* last sended/replied RTD request */
+   ASN1UINT8		rtdrSend, rtdrRecv;		/* last sended/replied RTD request */
    void                 *usrData; /*!<User can set this to user specific data*/
    struct OOH323CallData* next;
    struct OOH323CallData* prev;