diff --git a/README.md b/README.md
index 58c70cb..aa7b666 100644
--- a/README.md
+++ b/README.md
@@ -42,11 +42,13 @@ go to the Python Console and enter the following commands :
 
 # Errors
 Common errors than I personally encoured during this project, hope this can help you.
-### FANN/FANN2 error during pip requirements
-#### Linux : 
 
-I actually don't know how I solved this but I tried building myself FANN following the instruction from [here](https://github.com/libfann/fann#from-source).
-Here is some links I found trying to solve the error :
+### FANN/FANN2 error during pip requirements
+
+#### Linux :
+
+I actually don't know how I solved this but I tried building myself FANN following the instruction
+from [here](https://github.com/libfann/fann#from-source). Here is some links I found trying to solve the error :
 https://stackoverflow.com/questions/51367972/lib-fann2-failed-to-install
 https://github.com/FutureLinkCorporation/fann2/issues/11
 https://github.com/MycroftAI/padatious#installing
@@ -54,8 +56,17 @@ https://github.com/MycroftAI/padatious/issues/21
 https://jansipke.nl/installing-fann-with-python-bindings-on-ubuntu/
 
 #### Windows
+
 Solution for windows users :
+
 ```
 pip install pipwin
 pipwin install fann2
 ```
+
+### Error 404 from the HomeAssistant API
+
+*/!\ Only Windows usually*  
+Returns an error 404 when requesting information about an entity_id, you need to edit the source code of the file "
+rawapi.py" from the api.  
+Line 53 of rawapi.py must be changed from ``self.endpoint(path),`` to ``self.endpoint(path.replace('\\', '/')),``
\ No newline at end of file