diff --git a/doc/hook/f2hook.md b/doc/hook/f2hook.md
index a526997..d79703d 100644
--- a/doc/hook/f2hook.md
+++ b/doc/hook/f2hook.md
@@ -20,7 +20,8 @@ You need two main folders:
 
 ## Data folder
 Contents of the folder:
-* game: The binaries of the custom "AMFS". File names must be lower case.
+* game: The binaries of the custom "AMFS". File names must be lower case
+(e.g. `f2_1430828800.amf`) on a case sensitive file system.
 * lib: Put any libraries (especially older versions of libraries that can't be
 installed anymore using the package manager) the game uses and aren't installed
 on your system in here.
@@ -93,4 +94,4 @@ typically permission denied). Use the included *run.sh* file to start the game o
 
 # Further notes
 ## Vsync
-The game is required to run with vsync on.
\ No newline at end of file
+The game is required to run with vsync on.
diff --git a/doc/hook/fexhook.md b/doc/hook/fexhook.md
index e5a6ba9..3913286 100644
--- a/doc/hook/fexhook.md
+++ b/doc/hook/fexhook.md
@@ -21,7 +21,8 @@ You need two main folders:
 ## Data folder
 Contents of the folder:
 * game: The binaries of the custom "Fiesta FS". These are stored in raw areas
-of the HDD and have to be extraced. File names must be upper case.
+of the HDD and have to be extraced. File names must be upper case (e.g. `_DM0GA.BIN`)
+on a case sensitive file system.
 * lib: Put any libraries (especially older versions of libraries that can't be
 installed anymore using the package manager) the game uses and aren't installed
 on your system in here.
@@ -85,4 +86,4 @@ typically permission denied). Use the included *run.sh* file to start the game o
 
 # Further notes
 ## Vsync
-The game is required to run with vsync on.
\ No newline at end of file
+The game is required to run with vsync on.
diff --git a/doc/hook/fsthook.md b/doc/hook/fsthook.md
index 78c57ee..d27cda7 100644
--- a/doc/hook/fsthook.md
+++ b/doc/hook/fsthook.md
@@ -21,7 +21,9 @@ You need two main folders:
 ## Data folder
 Contents of the folder:
 * game: The binaries of the custom "Fiesta FS". These are stored in raw areas
-of the HDD and have to be extraced. File names must be upper case.
+of the HDD and have to be extraced. File names must be upper case (e.g. `_DM0GA.BIN`)
+on a case sensitive file system.
+
 * lib: Put any libraries (especially older versions of libraries that can't be
 installed anymore using the package manager) the game uses and aren't installed
 on your system in here.
@@ -86,4 +88,4 @@ typically permission denied). Use the included *run.sh* file to start the game o
 
 # Further notes
 ## Vsync
-The game is required to run with vsync on.
\ No newline at end of file
+The game is required to run with vsync on.