diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonMecanim.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonMecanim.cs
index db36aaf91..1824fff40 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonMecanim.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonMecanim.cs
@@ -28,8 +28,10 @@
  *****************************************************************************/
 
 using System.Collections.Generic;
-using UnityEditor.Animations;
 using UnityEngine;
+#if UNITY_EDITOR
+using UnityEditor.Animations;
+#endif
 
 namespace Spine.Unity {
 	[RequireComponent(typeof(Animator))]
diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderer.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderer.cs
index 0c4d3c282..87e3c9c8c 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderer.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderer.cs
@@ -51,8 +51,10 @@
 #define SPINE_OPTIONAL_MATERIALOVERRIDE
 
 using System.Collections.Generic;
-using UnityEditor.SceneManagement;
 using UnityEngine;
+#if UNITY_EDITOR
+using UnityEditor.SceneManagement;
+#endif
 
 namespace Spine.Unity {
 	/// <summary>Base class of animated Spine skeleton components. This component manages and renders a skeleton.</summary>