diff --git a/errors/custom.py b/errors/custom.py
index 0d95315..5837fb3 100644
--- a/errors/custom.py
+++ b/errors/custom.py
@@ -1,4 +1,4 @@
-class InterpreterError(Exception):
+class InterpreterException(Exception):
     pass
 
 class JavaSyntaxError(Exception):
diff --git a/interpreter/NassiShneidermann.py b/interpreter/NassiShneidermann.py
index da11556..03e3c7e 100644
--- a/interpreter/NassiShneidermann.py
+++ b/interpreter/NassiShneidermann.py
@@ -29,7 +29,7 @@ class NassiShneidermanDiagram:
             h += inst.getblksize()
         return int(h)
 
-    def convert_to_image(self, filepath, filename: str, x_size: int=200):
+    def convert_to_image(self, filepath: str, filename: str, x_size: int=200):
         image_y_sz = self._get_image_height()
         logging.info(f"Saving NSD to {filename}.png...")
         with NSD_writer(filepath, filename, x_size, image_y_sz):
diff --git a/interpreter/interpret_source.py b/interpreter/interpret_source.py
index 65ba5bb..a415c5a 100644
--- a/interpreter/interpret_source.py
+++ b/interpreter/interpret_source.py
@@ -3,7 +3,7 @@ from os import remove
 import re
 from typing import Callable, List, Tuple
 
-from errors.custom import InterpreterError, JavaSyntaxError, ScopeNotFoundException
+from errors.custom import InterpreterException, JavaSyntaxError, ScopeNotFoundException
 from draw.Iinstruction import *
 
 COMMENT_REGEX = r"""^//|^#|^COMMENT|^--"""
@@ -163,5 +163,5 @@ def load_instructions(filepath: str) -> List[Iinstruction]:
     src = load_src(filepath)
     instructions, i = get_instructions_in_scope(src)
     if i != len(src):
-        raise InterpreterError("Unknown error during source interpretation! Unsupported language constructs or ill-formed source?")
+        raise InterpreterException("Unknown error during source interpretation! Unsupported language constructs or ill-formed source?")
     return instructions
\ No newline at end of file