diff --git a/protocol.c b/protocol.c
index a7d6b091..a9522ee8 100644
--- a/protocol.c
+++ b/protocol.c
@@ -185,8 +185,8 @@ static int ContextDo(SConnection *pCon, SicsInterp *pSics, void *pData,
     
     status = Tcl_GetInt(pSics->pTcl,argv[1],&comCon.transID);
     if(status != TCL_OK){
-	snprintf(command,1023,"ERROR: failed to convert %s to transaction ID", argv[1]);
-        SCWrite(pCon,command,eError);
+	snprintf(buffer,1023,"ERROR: failed to convert %s to transaction ID", argv[1]);
+        SCWrite(pCon,buffer,eError);
 	return 0;
     }
     strncpy(comCon.deviceID,argv[2],SCDEVIDLEN);