diff --git a/Scripts/Editor/NodeEditorPreferences.cs b/Scripts/Editor/NodeEditorPreferences.cs
index 4fc6b7b..3af06b9 100644
--- a/Scripts/Editor/NodeEditorPreferences.cs
+++ b/Scripts/Editor/NodeEditorPreferences.cs
@@ -171,7 +171,7 @@ namespace XNodeEditor {
                     typeColors[type] = col;
                     if (settings.typeColors.ContainsKey(typeColorKey)) settings.typeColors[typeColorKey] = col;
                     else settings.typeColors.Add(typeColorKey, col);
-                    SavePrefs(typeColorKey, settings);
+                    SavePrefs(key, settings);
                     NodeEditorWindow.RepaintAll();
                 }
             }