diff --git a/README.md b/README.md
index bc455f9..423e834 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ $ pip install git+https://github.com/mimesis-inria/SimulationSimpleDatabase.git
 
 # Option 2 (DEVS): install as editable
 $ git clone https://github.com/mimesis-inria/SimulationSimpleDatabase.git
-$ cd SimRender
+$ cd SimulationSimpleDatabase
 $ pip install -e .
 ```
 
diff --git a/docs/src/install.rst b/docs/src/install.rst
index d4243f6..ca22217 100644
--- a/docs/src/install.rst
+++ b/docs/src/install.rst
@@ -35,7 +35,7 @@ Install with *pip*
 
 .. code-block:: bash
 
-    $ pip install git+https://github.com/mimesis-inria/SimulationSimpleDatabase.git
+    pip install git+https://github.com/mimesis-inria/SimulationSimpleDatabase.git
 
 Then, you should be able to run:
 
diff --git a/src/SSD/core/database.py b/src/SSD/core/database.py
index b16aace..8d246ca 100644
--- a/src/SSD/core/database.py
+++ b/src/SSD/core/database.py
@@ -253,13 +253,14 @@ def __new_fields(self,
                 field_name, field_type = field[0], field[1]
                 field_default = '_null_' if len(field) == 2 else field[2]
 
-                # As peewee.Model creates a new attribute named field_name, check that this attribute does not exist
-                if field_name in [m[0] for m in getmembers(table)]:
-                    raise ValueError(f"Tried to create a field '{field_name}' in the Table '{table_name}'. "
-                                     f"You are not allowed to create a field with this name, please rename it.")
-
                 # Extend the Table
                 if field_name not in table.fields():
+
+                    # As peewee.Model creates a new attribute named field_name, check that this attribute does not exist
+                    if field_name in [m[0] for m in getmembers(table)]:
+                        raise ValueError(f"Tried to create a field '{field_name}' in the Table '{table_name}'. "
+                                         f"You are not allowed to create a field with this name, please rename it.")
+
                     # FK
                     if type(field_type) == str:
                         if (fk_table_name := self.make_name(field_type)) not in self.__tables.keys():
@@ -267,6 +268,8 @@ def __new_fields(self,
                                              f"exists. Created Tables so far: {self.__tables.keys()}")
                         table.extend_fk(self.__tables[fk_table_name], field_name)
                         self.__fk[table_name][field_name] = fk_table_name
+
+                    # Standard field
                     else:
                         table.extend(field_name, field_type, field_default)