diff --git a/CodeList.cs b/CodeList.cs
index e10a733..a4658b9 100644
--- a/CodeList.cs
+++ b/CodeList.cs
@@ -126,8 +126,13 @@ namespace NewsCrawler
 		public void AddDuplicatedList(string strCode, string strName)
 		{
 			CODE_VALUE Result = m_CodeList.Find(s => s.m_strCode == strCode);
-			if(Result != null)
-				Result.m_enType |= CODE_TYPE.DUPLICATED;
+			if(Result == null)
+				return;
+
+			if((Result.m_enType & CODE_TYPE.DUPLICATED) == CODE_TYPE.DUPLICATED)
+				return;
+
+			Result.m_enType |= CODE_TYPE.DUPLICATED;
 
 			string strPath = Util.GetConfigPath()+"/code-duplicated.txt";
 			File.AppendAllText(strPath, strName+Environment.NewLine);
diff --git a/NewsForm.cs b/NewsForm.cs
index e068333..80f2b4e 100644
--- a/NewsForm.cs
+++ b/NewsForm.cs
@@ -122,6 +122,8 @@ namespace NewsCrawler
 						break;
 
 					case TextCondition.TYPE.POSITIVE:
+						m_CodeList.AddDuplicatedList(Code.m_strCode, Code.m_strName);
+
 						if((Code.m_enType&CodeList.CODE_TYPE.DENIAL) == CodeList.CODE_TYPE.DENIAL)
 							Util.Log(Util.LOG_TYPE.DENIAL, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
 						else if((Code.m_enType&CodeList.CODE_TYPE.DENIAL) == CodeList.CODE_TYPE.DUPLICATED)
@@ -132,10 +134,12 @@ namespace NewsCrawler
 						{
 							Util.Log(Util.LOG_TYPE.POSITIVE, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
 							BuyItem(Code);
-						}	
+						}
 						break;
 
 					case TextCondition.TYPE.MANUAL:
+						m_CodeList.AddDuplicatedList(Code.m_strCode, Code.m_strName);
+
 						Util.Log(Util.LOG_TYPE.MANUAL_KEYWORD, string.Format("[{0}] {1} (keyword:{2}, code:{3})", strRef, strTitle, MatchResult.m_strKeyword, Code.ToString()));
 
 						if(m_bBuy == true)