diff --git a/b_asic/signal_flow_graph.py b/b_asic/signal_flow_graph.py
index 4a22e6dfdd6ac47b5cf5588cfeaad6cd6069a474..2f2a024053d41b2f15a4eb18ceb239c5832ff95d 100644
--- a/b_asic/signal_flow_graph.py
+++ b/b_asic/signal_flow_graph.py
@@ -352,6 +352,9 @@ class SFG(AbstractOperation):
 
     
     def __str__(self):
+        """Prints operations, inputs and outputs in a SFG 
+        """
+
         output_string = ""
 
         for comp in self._components_in_dfs_order:
diff --git a/test/test_print_sfg.py b/test/test_print_sfg.py
index de0184e6c58ffbffb3b898569e3895c41665d37f..feb3626e4791bd2d67f4711abd9a108c3cc0aec8 100644
--- a/test/test_print_sfg.py
+++ b/test/test_print_sfg.py
@@ -1,3 +1,8 @@
+"""
+B-ASIC test suite for printing a SFG
+"""
+
+
 from b_asic.signal_flow_graph import SFG
 from b_asic.core_operations import Addition, Multiplication, Constant, ConstantAddition
 from b_asic.port import InputPort, OutputPort
@@ -6,7 +11,6 @@ from b_asic.special_operations import Input, Output
 
 import pytest
 
-""" Formatting is tested manually by checking the output print. Needed good eyes """
 
 class TestPrintSfg:
     def test_print_one_addition(self):