diff --git a/resources/shaders/printbed.vs b/resources/shaders/printbed.vs
index ac4763782..ee19098c1 100644
--- a/resources/shaders/printbed.vs
+++ b/resources/shaders/printbed.vs
@@ -1,12 +1,12 @@
 #version 110
 
-attribute vec4 v_position;
+attribute vec3 v_position;
 attribute vec2 v_tex_coords;
 
 varying vec2 tex_coords;
 
 void main()
 {
-    gl_Position = gl_ProjectionMatrix * gl_ModelViewMatrix * v_position;
+    gl_Position = gl_ModelViewProjectionMatrix * vec4(v_position, 1.0);
     tex_coords = v_tex_coords;
 }