diff --git a/src/1_model.glsl b/src/1_model.glsl
index 21c6a33..1af8dfe 100644
--- a/src/1_model.glsl
+++ b/src/1_model.glsl
@@ -29,6 +29,8 @@ mat4 model(bool is_moon, float time)
   float r = 2.0;
   float full_rotation = 2 * M_PI;
   float theta = full_rotation * time / 4.0;
+  // Invert rotation
+  theta = -theta;
 
   float x = r * cos(theta);
   float z = r * sin(theta);