diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs
index 0a44bf940..0cac07a37 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/MaterialChecks.cs
@@ -302,7 +302,7 @@ namespace Spine.Unity {
 			var requiredChannels =
 				AdditionalCanvasShaderChannels.TexCoord1 |
 				AdditionalCanvasShaderChannels.TexCoord2;
-			return !canvas.additionalShaderChannels.HasFlag(requiredChannels); // HasFlag returns true if both are set.
+			return (canvas.additionalShaderChannels & requiredChannels) != requiredChannels;
 		}
 	}
 }