diff --git a/Source/Editor/Windows/Assets/AnimationGraphWindow.cs b/Source/Editor/Windows/Assets/AnimationGraphWindow.cs
index 1cf03f062..43faa59f9 100644
--- a/Source/Editor/Windows/Assets/AnimationGraphWindow.cs
+++ b/Source/Editor/Windows/Assets/AnimationGraphWindow.cs
@@ -149,6 +149,10 @@ namespace FlaxEditor.Windows.Assets
                                                         (instance, parameter, tag) => ((AnimationGraphWindow)instance).PreviewActor.GetParameterValue(parameter.Identifier),
                                                         (instance, value, parameter, tag) => ((AnimationGraphWindow)instance).PreviewActor.SetParameterValue(parameter.Identifier, value),
                                                         Values);
+
+                    // Parameters will always have one element
+                    if (parameters.Length < 2)
+                        layout.Label("No parameters", TextAlignment.Center);
                 }
             }
         }
diff --git a/Source/Editor/Windows/Assets/ParticleEmitterWindow.cs b/Source/Editor/Windows/Assets/ParticleEmitterWindow.cs
index c373b4cdc..39b4d6ac2 100644
--- a/Source/Editor/Windows/Assets/ParticleEmitterWindow.cs
+++ b/Source/Editor/Windows/Assets/ParticleEmitterWindow.cs
@@ -2,6 +2,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using FlaxEditor.Content;
 using FlaxEditor.CustomEditors;
 using FlaxEditor.Scripting;
@@ -104,6 +105,9 @@ namespace FlaxEditor.Windows.Assets
                                                         (instance, parameter, tag) => ((ParticleEmitterWindow)instance).Preview.PreviewActor.GetParameterValue(string.Empty, parameter.Name),
                                                         (instance, value, parameter, tag) => ((ParticleEmitterWindow)instance).Preview.PreviewActor.SetParameterValue(string.Empty, parameter.Name, value),
                                                         Values);
+
+                    if (!parameters.Any())
+                        layout.Label("No parameters", TextAlignment.Center);
                 }
             }
         }