diff --git a/fec_manager.h b/fec_manager.h
index 12b32bc..215b8bd 100644
--- a/fec_manager.h
+++ b/fec_manager.h
@@ -190,7 +190,16 @@ struct fec_parameter_t
 		return 0;
 	}
 
+	int clone_fec(fec_parameter_t & other)
+	{
+		assert(other.rs_cnt>=1);
+		rs_cnt=other.rs_cnt;
+		memcpy(rs_par,other.rs_par,sizeof(rs_parameter_t)*rs_cnt);
+		
+		version++;
 
+		return 0;
+	}
 };
 
 extern fec_parameter_t g_fec_par;
diff --git a/misc.cpp b/misc.cpp
index e9715d8..6965823 100644
--- a/misc.cpp
+++ b/misc.cpp
@@ -292,10 +292,7 @@ int handle_command(char *s)
 			mylog(log_warn,"failed to parse [%s]\n",tmp_str);
 			return -1;
 		}
-		int version=g_fec_par.version;
-		g_fec_par.clone(tmp_par);
-		g_fec_par.version=version;
-		g_fec_par.version++;
+		g_fec_par.clone_fec(tmp_par);
 		strcpy(rs_par_str,tmp_str);
 		//g_fec_data_num=a;
 		//g_fec_redundant_num=b;