diff --git a/resources/assets/botania/shader/doppleganger.frag b/resources/assets/botania/shader/doppleganger.frag
index 6177b0e2b..2f45f1d6c 100644
--- a/resources/assets/botania/shader/doppleganger.frag
+++ b/resources/assets/botania/shader/doppleganger.frag
@@ -1,6 +1,6 @@
 #version 120
 
-attribute vec2 texcoord;
+varying vec2 texcoord;
 uniform sampler2D bgl_RenderedTexture;
 uniform int time; // Passed in, see ShaderHelper.java