diff --git a/src/Magnum/Shaders/LineGL.h b/src/Magnum/Shaders/LineGL.h
index 14ed88293..db505b5ad 100644
--- a/src/Magnum/Shaders/LineGL.h
+++ b/src/Magnum/Shaders/LineGL.h
@@ -70,6 +70,8 @@ styles, and antialiased independently of MSAA being used or not.
 
 @image html shaders-line.png width=256px
 
+@experimental
+
 @requires_gl30 Extension @gl_extension{EXT,gpu_shader4}
 @requires_gles30 Requires integer support in shaders which is not available in
     OpenGL ES 2.0.