diff --git a/include/nf_3d.h b/include/nf_3d.h
index a5e7004..e9fc126 100644
--- a/include/nf_3d.h
+++ b/include/nf_3d.h
@@ -18,7 +18,7 @@ extern "C" {
 /// @file   nf_3d.h
 /// @brief  Functions to setup 3D video options.
 
-/// @defgroup nf_2d 3D video setup
+/// @defgroup nf_3d 3D video setup
 ///
 /// Functions to setup 2D the video modes of the NDS and enable 3D.
 ///
diff --git a/include/nf_sprite3d.h b/include/nf_sprite3d.h
index c6b9ba4..f43fc55 100644
--- a/include/nf_sprite3d.h
+++ b/include/nf_sprite3d.h
@@ -403,6 +403,9 @@ void NF_3dSpriteGetPalColor(u8 pal, u8 number, u8* r, u8* g, u8* b);
 ///
 /// Change the sprite depth to prevent it from intersecting with other sprites
 /// when rotation or zoom are applied.
+///
+/// @param id Sprite ID (0 - 255).
+/// @param z Depth (-512 - 512)
 void NF_3dSpriteSetDepth(u8 id, s16 z);
 
 // Defines for backwards compatibility