diff --git a/lib/db.py b/lib/db.py
index 4f94f62..4aef0b5 100644
--- a/lib/db.py
+++ b/lib/db.py
@@ -72,9 +72,11 @@ def createFilterTable(file):
         print("db connection:",connection.total_changes)
 def addFineFilter(file,table,filterstr):
     with sqlite3.connect(file) as connection:
-        cmd = f"""INSERT INTO {table}(cmd) VALUES(?);"""
+        cmd_createFineFilter = f"""INSERT INTO {table}(cmd) VALUES(?);"""
+        cmd_checkIfExists = f"""SELECT * FROM {table} WHERE cmd = ?"""
         cursor = connection.cursor()
-        cursor.execute(cmd,(filterstr,))
+        if cursor.execute(cmd_checkIfExists,(filterstr,)).fetchone() == None:
+            cursor.execute(cmd_createFineFilter,(filterstr,))
 
 def writedb(jobs):
         with sqlite3.connect("../db/sqlite3.db") as connection:
diff --git a/lib/gui.py b/lib/gui.py
index 3bcb8d6..a04149f 100644
--- a/lib/gui.py
+++ b/lib/gui.py
@@ -114,6 +114,7 @@ class MainWindow(QMainWindow):
         if self.w is None:
             self.w =  QueryWindow()
         self.w.show()
+        self.w.queryFineFilers()
     def filter_canton(self,canton):
         if canton != "ALL":
             self.cmdCanton = f""" 
@@ -141,7 +142,8 @@ class MainWindow(QMainWindow):
             connectingstring = ' '
         print(self.initcmd + self.cmdCanton +connectingstring +self.customcmd + self.cmd)
         self.customSQL(self.initcmd+ self.cmdCanton + connectingstring + self.customcmd + self.cmd)
-        addFineFilter("../db/sqlite3.db","filters",self.customcmd + self.cmd)
+        if self.customcmd or self.cmd:
+            addFineFilter("../db/sqlite3.db","filters",self.customcmd + self.cmd)
 
     def cell_clicked(self):
         x = self.view.selectionModel().currentIndex().row()
@@ -230,9 +232,8 @@ class QueryWindow(QWidget):
         self.CShowViews.currentTextChanged.connect(self.setView)
 
         self.CShowFineFilters = QComboBox()
-        FineFilterItems = self.getFineFilters()
-        for item in FineFilterItems:
-            self.CShowFineFilters.addItem(item)
+
+        self.queryFineFilers()
         self.CShowFineFilters.currentTextChanged.connect(window.EditQuery.setText)
 
         self.PApplyView = QCheckBox()
@@ -260,6 +261,11 @@ class QueryWindow(QWidget):
         self.EditQuery.setText(window.customcmd)
         
         print("Comboshowview:",self.CShowViews.currentText())
+    def queryFineFilers(self):
+        self.CShowFineFilters.clear()
+        FineFilterItems = self.getFineFilters()
+        for item in FineFilterItems:
+            self.CShowFineFilters.addItem(item)
     def getFineFilters(self):
         item = []
         statement = f"""Select cmd FROM filters;"""