diff --git a/doc/PID tuning.md b/doc/PID tuning.md
index 51abc74..3615e6c 100644
--- a/doc/PID tuning.md	
+++ b/doc/PID tuning.md	
@@ -13,7 +13,7 @@ When tuning Thermostat PID parameters, it is helpful to view the temperature, PI
 To use the Python real-time plotting utility, run
 
 ```shell
-python pytec/plot.py
+python pytec/pytec/plot.py
 ```
 
 ![default view](./assets/default%20view.png)
@@ -49,7 +49,7 @@ A PID auto tuning utility is provided in the Pytec library. The auto tuning util
 To run the auto tuning utility, run
 
 ```shell
-python pytec/autotune.py
+python pytec/pytec/autotune.py
 ```
 
 After some time, the auto tuning utility will output the auto tuning results, below is a sample output
diff --git a/pytec/autotune.py b/pytec/pytec/autotune.py
similarity index 100%
rename from pytec/autotune.py
rename to pytec/pytec/autotune.py
diff --git a/pytec/plot.py b/pytec/pytec/plot.py
similarity index 100%
rename from pytec/plot.py
rename to pytec/pytec/plot.py
diff --git a/pytec/test.py b/pytec/pytec/test.py
similarity index 100%
rename from pytec/test.py
rename to pytec/pytec/test.py