diff --git a/goodchain/src/helpers/TaskHelper.py b/goodchain/src/helpers/TaskHelper.py
index 105f0b1..96b94a1 100644
--- a/goodchain/src/helpers/TaskHelper.py
+++ b/goodchain/src/helpers/TaskHelper.py
@@ -54,13 +54,15 @@ def createBlock(self):
     try:
         lastBlock = utilityHelper.loadFile("../data/ledger.dat")
     except:
-        lastBlock = None
-    if lastBlock != None:
+        lastBlock = []
+
+    print(lastBlock)
+    if lastBlock != []:
         lastBlock = lastBlock[-1]
     
-    if lastBlock != None and time.time() - lastBlock.date < 180:
-        print("You can only mine a block every 3 minutes")
-        return False
+        if lastBlock != None and time.time() - lastBlock.date < 180:
+            print("You can only mine a block every 3 minutes")
+            return False
     
     transactions = Tx()
     transactions = utilityHelper.loadFile("../data/transaction_pool.dat")
@@ -128,7 +130,8 @@ def createBlock(self):
     if only_personal:
         print("You need atleast 1 transaction from another user")
         return False
-    
+    if lastBlock == []:
+        lastBlock = None
     block = TxBlock(lastBlock)
 
     # create block
@@ -164,6 +167,12 @@ def createBlock(self):
     utilityHelper.saveFile("../data/ledger.dat", block)
     # TODO remove transactions from transaction pool
 
+    utilityHelper.resetFile("../data/transaction_pool.dat")
+    transaction_count = 0
+    for transaction in transactions:
+        if transaction_count not in selected_transactions:
+            utilityHelper.saveFile("../data/transaction_pool.dat", transactions[i])
+
     return True