diff --git a/engine/movie/crystal_intro.asm b/engine/movie/intro.asm
similarity index 99%
rename from engine/movie/crystal_intro.asm
rename to engine/movie/intro.asm
index 9fbd67078..0a88f8ab7 100644
--- a/engine/movie/crystal_intro.asm
+++ b/engine/movie/intro.asm
@@ -1,4 +1,7 @@
 Copyright_GFPresents:
+; Play the copyright screen and GameFreak Presents sequence.
+; Return carry if user cancels animation by pressing a button.
+
 	ld de, MUSIC_NONE
 	call PlayMusic
 	call ClearBGPalettes
diff --git a/main.asm b/main.asm
index b53649cd5..49fc676ae 100644
--- a/main.asm
+++ b/main.asm
@@ -493,7 +493,7 @@ CopyrightGFX::
 INCBIN "gfx/splash/copyright.2bpp"
 
 INCLUDE "engine/menus/options_menu.asm"
-INCLUDE "engine/movie/crystal_intro.asm"
+INCLUDE "engine/movie/intro.asm"
 
 
 SECTION "bank3E", ROMX