diff --git a/Editor/ClusterEditor.cs b/Editor/ClusterEditor.cs
index 3bc2791..9a26561 100644
--- a/Editor/ClusterEditor.cs
+++ b/Editor/ClusterEditor.cs
@@ -245,10 +245,10 @@ namespace NanoBrain.Unity {
                         neuron.bias = newBias;
                     }
 
-                    bool newTrainable = EditorGUILayout.Toggle("Trainable", neuron.trainable);
-                    if (newTrainable != neuron.trainable) {
+                    bool newTrainable = EditorGUILayout.Toggle("Trainable", neuron.trainableBias);
+                    if (newTrainable != neuron.trainableBias) {
                         anythingChanged = true;
-                        neuron.trainable = newTrainable;
+                        neuron.trainableBias = newTrainable;
                     }
 
                     EditorGUIUtility.labelWidth = previousLabelWidth;
diff --git a/Runtime/Scripts/Core/Neuron.cs b/Runtime/Scripts/Core/Neuron.cs
index cd74076..4d61bc0 100644
--- a/Runtime/Scripts/Core/Neuron.cs
+++ b/Runtime/Scripts/Core/Neuron.cs
@@ -50,7 +50,7 @@ namespace NanoBrain {
         /// <summary>
         /// Indicator whether the bias can be trained
         /// </summary>
-        public bool trainable = false;
+        public bool trainableBias = false;
 
         #region Synapses
 
@@ -281,7 +281,7 @@ namespace NanoBrain {
         /// <param name="clone"></param>
         protected virtual void CloneFields(Neuron clone) {
             clone.bias = this.bias;
-            clone.trainable = this.trainable;
+            clone.trainableBias = this.trainableBias;
             clone.persistOutput = this.persistOutput;
             clone.combinator = this.combinator;
             clone.activator = this.activator;
@@ -678,7 +678,7 @@ namespace NanoBrain {
                 synapse.BackPropagation(this, derivative, learningRate);
 
             // Bias
-            if (this.trainable) {
+            if (this.trainableBias) {
                 // This does not work well, because the derivative/error does not have a 3D direction
                 // float3 biasDerivative = derivative; // dSSR/dActivator
                 // switch (activator) { // dActivator/dBias
@@ -706,7 +706,7 @@ namespace NanoBrain {
                     synapse.BackPropagation(this, derivative.magnitude, learningRate);
 
             // Bias
-            if (this.trainable) {
+            if (this.trainableBias) {
                 switch (this.activator) { // dActivator/dBias
                     case ActivationType.Linear:
                         derivative *= 1;