diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index ff1beb34b..03c14274c 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/app/build.gradle b/app/build.gradle
index 3dd1f6877..dce6e6283 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,8 +7,8 @@ android {
         applicationId = 'com.wagerrwallet'
         minSdkVersion 23
         targetSdkVersion 28
-        versionCode 279
-        versionName "279"
+        versionCode 280
+        versionName "280"
         multiDexEnabled true
 
         // Similar to other properties in the defaultConfig block,
diff --git a/app/src/main/java/com/wagerrwallet/tools/sqlite/BetMappingTxDataStore.java b/app/src/main/java/com/wagerrwallet/tools/sqlite/BetMappingTxDataStore.java
index 89bb6cab8..fb2c2c006 100644
--- a/app/src/main/java/com/wagerrwallet/tools/sqlite/BetMappingTxDataStore.java
+++ b/app/src/main/java/com/wagerrwallet/tools/sqlite/BetMappingTxDataStore.java
@@ -272,6 +272,26 @@ public void deleteTxByHash(Context app, String iso, String hash) {
         }
     }
 
+    public void deleteDuplicateMappings(Context app) {
+        Cursor cursor = null;
+        try {
+            database = openDatabase();
+            Log.e(TAG, "mapping transaction deleted" );
+            String QUERY = "delete from "+BRSQLiteHelper.BMTX_TABLE_NAME+" where " + BRSQLiteHelper.BMTX_COLUMN_ID + " in (select " + BRSQLiteHelper.BMTX_COLUMN_ID + " "
+                    + "from "+BRSQLiteHelper.BMTX_TABLE_NAME+" where "+ BRSQLiteHelper.BMTX_MAPPINGID +" in "
+                    + "(select "+ BRSQLiteHelper.BMTX_MAPPINGID +" from "+BRSQLiteHelper.BMTX_TABLE_NAME+" where " + BRSQLiteHelper.BMTX_NAMESPACEID +"=3 "
+                    + "group by " + BRSQLiteHelper.BMTX_NAMESPACEID + ", " + BRSQLiteHelper.BMTX_MAPPINGID + " "
+                    + "having count(*)>1) "
+                    + "and " + BRSQLiteHelper.BMTX_COLUMN_ID + " not in (select max(" + BRSQLiteHelper.BMTX_COLUMN_ID + ") from "+BRSQLiteHelper.BMTX_TABLE_NAME+" where "+ BRSQLiteHelper.BMTX_NAMESPACEID +"=3 "
+                    + "group by " + BRSQLiteHelper.BMTX_NAMESPACEID + ", " + BRSQLiteHelper.BMTX_MAPPINGID + " "
+                    + "having count(*)>1) )";
+
+            database.rawQuery(QUERY, null);
+        } finally {
+            closeDatabase();
+        }
+    }
+
     public class BetMappingDupItem {
         public long NamespaceID;
         public long MappingID;
diff --git a/app/src/main/java/com/wagerrwallet/wallet/wallets/wagerr/WalletWagerrManager.java b/app/src/main/java/com/wagerrwallet/wallet/wallets/wagerr/WalletWagerrManager.java
index 255c034a2..fa9a57f62 100644
--- a/app/src/main/java/com/wagerrwallet/wallet/wallets/wagerr/WalletWagerrManager.java
+++ b/app/src/main/java/com/wagerrwallet/wallet/wallets/wagerr/WalletWagerrManager.java
@@ -304,11 +304,15 @@ public List<TxUiHolder> getTxUiHolders() {
     }
 
     protected void CleanChainBugs(Context app) {
+        BetMappingTxDataStore bm = BetMappingTxDataStore.getInstance(app);
         // fake team mappings for ID 187.
-        BetMappingTxDataStore.getInstance(app).deleteTxByHash(app,"wgr", "cc89779e8e57d49e5e6d3e16ad57e648b19d86fb8f4714bc7df5abd3f92daa1d");
-        BetMappingTxDataStore.getInstance(app).deleteTxByHash(app,"wgr", "d8e1e8389bbcffe1c79cf11e2206281377e54b99219ec6ccec296c2adb8ad65f");
-        BetMappingTxDataStore.getInstance(app).deleteTxByHash(app,"wgr", "929972a7b2fdf55f6da7488ccaf7312fd5d22c4bca003ca089293c93f1c32917");
-        BetMappingTxDataStore.getInstance(app).deleteTxByHash(app,"wgr", "e4e3a4f782569fa3bf0135297942c8a1c791ec869ca036bf530ab95633d17815");
+        bm.deleteTxByHash(app,"wgr", "cc89779e8e57d49e5e6d3e16ad57e648b19d86fb8f4714bc7df5abd3f92daa1d");
+        bm.deleteTxByHash(app,"wgr", "d8e1e8389bbcffe1c79cf11e2206281377e54b99219ec6ccec296c2adb8ad65f");
+        bm.deleteTxByHash(app,"wgr", "929972a7b2fdf55f6da7488ccaf7312fd5d22c4bca003ca089293c93f1c32917");
+        bm.deleteTxByHash(app,"wgr", "e4e3a4f782569fa3bf0135297942c8a1c791ec869ca036bf530ab95633d17815");
+
+        // duplicate mappings
+        bm.deleteDuplicateMappings(app);
     }
 
     @Override