diff --git a/README.md b/README.md
index 5b0b647..05fa209 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ print(f"Rods Position Ordered: {nucon.RODS_POS_ORDERED.value}")
 
 # The repr of an attribute contains all contained info
 nucon.CORE_TEMP
-# >> NuconParameter(id='CORE_TEMP', value=500.0, param_type=float, writable=False)
+# >> NuconParameter(id='CORE_TEMP', value=500.0, param_type=float, is_writable=False)
 ```
 
 ## API Reference
diff --git a/nucon/core.py b/nucon/core.py
index 6e61871..5e717a2 100644
--- a/nucon/core.py
+++ b/nucon/core.py
@@ -99,7 +99,7 @@ class NuconParameter:
         self.nucon.set(self, new_value, force)
 
     def __repr__(self):
-        return f"NuconParameter(id='{self.id}', value={self.value}, param_type={self.param_type.__name__}, writable={self.is_writable})"
+        return f"NuconParameter(id='{self.id}', value={self.value}, param_type={self.param_type.__name__}, is_writable={self.is_writable})"
 
     def __str__(self):
         return self.id