diff --git a/src/parsers/DefConceptParser.py b/src/parsers/DefConceptParser.py
index ef854ae..21077bf 100644
--- a/src/parsers/DefConceptParser.py
+++ b/src/parsers/DefConceptParser.py
@@ -17,7 +17,7 @@ class ParsingException(Exception):
 
 
 @dataclass()
-class DefaultParserNode(Node):
+class DefConceptParserNode(Node):
     """
     Base node for all default parser nodes
     """
@@ -25,12 +25,12 @@ class DefaultParserNode(Node):
 
 
 @dataclass()
-class DefaultParserErrorNode(DefaultParserNode, ErrorNode):
+class DefConceptParserErrorNode(DefConceptParserNode, ErrorNode):
     pass
 
 
 @dataclass()
-class CannotHandleErrorNode(DefaultParserErrorNode):
+class CannotHandleErrorNode(DefConceptParserErrorNode):
     """
     The input is not recognized
     """
@@ -38,7 +38,7 @@ class CannotHandleErrorNode(DefaultParserErrorNode):
 
 
 @dataclass()
-class NameNode(DefaultParserNode):
+class NameNode(DefConceptParserNode):
 
     def get_name(self):
         name = ""
@@ -70,7 +70,7 @@ class NameNode(DefaultParserNode):
 
 
 @dataclass()
-class DefConceptNode(DefaultParserNode):
+class DefConceptNode(DefConceptParserNode):
     name: NameNode = NotInitializedNode()
     where: ReturnValueConcept = NotInitializedNode()
     pre: ReturnValueConcept = NotInitializedNode()
@@ -92,7 +92,7 @@ class DefConceptNode(DefaultParserNode):
 
 
 @dataclass()
-class IsaConceptNode(DefaultParserNode):
+class IsaConceptNode(DefConceptParserNode):
     concept: NameNode = NotInitializedNode()
     set: NameNode = NotInitializedNode()
 
diff --git a/src/printer/SheerkaPrinter.py b/src/printer/SheerkaPrinter.py
index bf3c35a..ac87258 100644
--- a/src/printer/SheerkaPrinter.py
+++ b/src/printer/SheerkaPrinter.py
@@ -30,7 +30,7 @@ class SheerkaPrinter:
         self.sheerka = sheerka
         self.formatter = Formatter()
         self.custom_concepts_printers = {}
-       # self.reset()
+        self.reset()
 
     def reset(self):
         self.custom_concepts_printers = {