diff --git a/dsmr_parser/parsers.py b/dsmr_parser/parsers.py
index 5dedd09..e8cc704 100644
--- a/dsmr_parser/parsers.py
+++ b/dsmr_parser/parsers.py
@@ -225,8 +225,11 @@ class ProfileGenericParser(DSMRObjectParser):
         self.parsers_for_unidentified = parsers_for_unidentified
 
     def _is_line_wellformed(self, line, values):
+        
+        # allow empty parentheses (indicated by empty string)
         if values and (len(values) == 1) and (values[0] == ''):
             return True
+
         if values and (len(values) >= 2) and (values[0].isdigit()):
             buffer_length = int(values[0])
             return (buffer_length <= 10) and (len(values) == (buffer_length * 2 + 2))
@@ -234,9 +237,10 @@ class ProfileGenericParser(DSMRObjectParser):
             return False
 
     def _parse_values(self, values):
+        # in case of empty parentheses return
         if values and (len(values) == 1) and (values[0] == None):
-            return [self.value_formats[i].parse(value)
-                for i, value in enumerate(values)]
+            return super()._parse_values(values) #calling parent
+
         buffer_length = int(values[0])
         buffer_value_obis_ID = values[1]
         if (buffer_length > 0):