diff --git a/slixfeed/sqlite.py b/slixfeed/sqlite.py
index 2fb523d..3fbf1ff 100644
--- a/slixfeed/sqlite.py
+++ b/slixfeed/sqlite.py
@@ -2078,8 +2078,7 @@ def get_filter_value(db_file, key):
             """
             )
         par = (key,)
-        value = cur.execute(sql, par).fetchone()[0]
-        value = str(value)
+        value = cur.execute(sql, par).fetchone()
     return value
 
 
diff --git a/slixfeed/version.py b/slixfeed/version.py
index 420c0cd..1b4c92b 100644
--- a/slixfeed/version.py
+++ b/slixfeed/version.py
@@ -1,2 +1,2 @@
-__version__ = '0.1.8'
-__version_info__ = (0, 1, 8)
+__version__ = '0.1.9'
+__version_info__ = (0, 1, 9)
diff --git a/slixfeed/xmpp/client.py b/slixfeed/xmpp/client.py
index 4b6a0c2..41bcf0e 100644
--- a/slixfeed/xmpp/client.py
+++ b/slixfeed/xmpp/client.py
@@ -551,12 +551,14 @@ class Slixfeed(slixmpp.ClientXMPP):
         form = self['xep_0004'].make_form('form', 'Filters')
         form['instructions'] = '🛡️ Manage filters' # 🪄️
         value = sqlite.get_filter_value(db_file, 'allow')
+        if value: value = str(value[0])
         form.add_field(var='allow',
                        ftype='text-single',
                        label='Allow list',
                        value=value,
                        desc=('Keywords to allow (comma-separated keywords).'))
         value = sqlite.get_filter_value(db_file, 'deny')
+        if value: value = str(value[0])
         form.add_field(var='deny',
                        ftype='text-single',
                        label='Deny list',
@@ -599,7 +601,7 @@ class Slixfeed(slixmpp.ClientXMPP):
             #      an empty form instead of editing a form.
             # keywords = sqlite.get_filter_value(db_file, key)
             keywords = ''
-            val = await config.add_to_list(val, keywords)
+            val = await config.add_to_list(val, keywords) if val else ''
             if sqlite.is_filter_key(db_file, key):
                 await sqlite.update_filter_value(db_file, [key, val])
             elif val:
diff --git a/slixfeed/xmpp/process.py b/slixfeed/xmpp/process.py
index cbf18b1..32fef71 100644
--- a/slixfeed/xmpp/process.py
+++ b/slixfeed/xmpp/process.py
@@ -328,6 +328,7 @@ async def message(self, message):
                     if val:
                         db_file = config.get_pathname_to_database(jid_file)
                         keywords = sqlite.get_filter_value(db_file, key)
+                        if keywords: keywords = str(keywords[0])
                         val = await config.add_to_list(val, keywords)
                         if sqlite.is_filter_key(db_file, key):
                             await sqlite.update_filter_value(db_file,
@@ -346,6 +347,7 @@ async def message(self, message):
                     if val:
                         db_file = config.get_pathname_to_database(jid_file)
                         keywords = sqlite.get_filter_value(db_file, key)
+                        if keywords: keywords = str(keywords[0])
                         val = await config.remove_from_list(val, keywords)
                         if sqlite.is_filter_key(db_file, key):
                             await sqlite.update_filter_value(db_file,
@@ -434,6 +436,7 @@ async def message(self, message):
                     if val:
                         db_file = config.get_pathname_to_database(jid_file)
                         keywords = sqlite.get_filter_value(db_file, key)
+                        if keywords: keywords = str(keywords[0])
                         val = await config.add_to_list(val, keywords)
                         if sqlite.is_filter_key(db_file, key):
                             await sqlite.update_filter_value(db_file,
@@ -452,6 +455,7 @@ async def message(self, message):
                     if val:
                         db_file = config.get_pathname_to_database(jid_file)
                         keywords = sqlite.get_filter_value(db_file, key)
+                        if keywords: keywords = str(keywords[0])
                         val = await config.remove_from_list(val, keywords)
                         if sqlite.is_filter_key(db_file, key):
                             await sqlite.update_filter_value(db_file,