diff --git a/src/fileio.cpp b/src/fileio.cpp
index 6d5e2da287..bd05a4e7d5 100644
--- a/src/fileio.cpp
+++ b/src/fileio.cpp
@@ -30,136 +30,12 @@
 
 #include "safeguards.h"
 
-static SpriteFile *_fio_current_file;                       ///< current file handle for the Fio functions
-static std::array<SpriteFile *, MAX_FILE_SLOTS> _fio_files; ///< array of random access files we can have open
-
 /** Whether the working directory should be scanned. */
 static bool _do_scan_working_directory = true;
 
 extern std::string _config_file;
 extern std::string _highscore_file;
 
-/**
- * Transition helper to get the SpriteFile associated with a given slot.
- */
-SpriteFile *FioGetSpriteFile(int slot)
-{
-	return _fio_files[slot];
-}
-
-/**
- * Get position in the current file.
- * @return Position in the file.
- */
-size_t FioGetPos()
-{
-	return _fio_current_file->GetPos();
-}
-
-/**
- * Get the filename associated with a slot.
- * @param slot Index of queried file.
- * @return Name of the file.
- */
-const char *FioGetFilename(uint8 slot)
-{
-	return _fio_current_file->GetSimplifiedFilename().c_str();
-}
-
-/**
- * Seek in the current file.
- * @param pos New position.
- * @param mode Type of seek (\c SEEK_CUR means \a pos is relative to current position, \c SEEK_SET means \a pos is absolute).
- */
-void FioSeekTo(size_t pos, int mode)
-{
-	_fio_current_file->SeekTo(pos, mode);
-}
-
-/**
- * Switch to a different file and seek to a position.
- * @param slot Slot number of the new file.
- * @param pos New absolute position in the new file.
- */
-void FioSeekToFile(uint8 slot, size_t pos)
-{
-	SpriteFile *file = _fio_files[slot];
-	assert(file != nullptr);
-	_fio_current_file = file;
-	_fio_current_file->SeekTo(pos, SEEK_SET);
-}
-
-/**
- * Read a byte from the file.
- * @return Read byte.
- */
-byte FioReadByte()
-{
-	return _fio_current_file->ReadByte();
-}
-
-/**
- * Skip \a n bytes ahead in the file.
- * @param n Number of bytes to skip reading.
- */
-void FioSkipBytes(int n)
-{
-	return _fio_current_file->SkipBytes(n);
-}
-
-/**
- * Read a word (16 bits) from the file (in low endian format).
- * @return Read word.
- */
-uint16 FioReadWord()
-{
-	return _fio_current_file->ReadWord();
-}
-
-/**
- * Read a double word (32 bits) from the file (in low endian format).
- * @return Read word.
- */
-uint32 FioReadDword()
-{
-	return _fio_current_file->ReadDword();
-}
-
-/**
- * Read a block.
- * @param ptr Destination buffer.
- * @param size Number of bytes to read.
- */
-void FioReadBlock(void *ptr, size_t size)
-{
-	_fio_current_file->ReadBlock(ptr, size);
-}
-
-/** Close all slotted open files. */
-void FioCloseAll()
-{
-	for (int i = 0; i != lengthof(_fio_files); i++) {
-		delete _fio_files[i];
-		_fio_files[i] = nullptr;
-	}
-}
-
-/**
- * Open a slotted file.
- * @param slot Index to assign.
- * @param filename Name of the file at the disk.
- * @param subdir The sub directory to search this file in.
- * @param palette_remap Whether palette remapping needs to take place.
- */
-SpriteFile &FioOpenFile(int slot, const std::string &filename, Subdirectory subdir, bool palette_remap)
-{
-	SpriteFile *file = new SpriteFile(filename, subdir, palette_remap);
-	delete _fio_files[slot];
-	_fio_files[slot] = file;
-	_fio_current_file = file;
-	return *file;
-}
-
 static const char * const _subdirs[] = {
 	"",
 	"save" PATHSEP,
diff --git a/src/fileio_func.h b/src/fileio_func.h
index b3ed9e138d..baa8cb1bb1 100644
--- a/src/fileio_func.h
+++ b/src/fileio_func.h
@@ -15,19 +15,6 @@
 #include <string>
 #include <vector>
 
-void FioSeekTo(size_t pos, int mode);
-void FioSeekToFile(uint8 slot, size_t pos);
-size_t FioGetPos();
-const char *FioGetFilename(uint8 slot);
-byte FioReadByte();
-uint16 FioReadWord();
-uint32 FioReadDword();
-void FioCloseAll();
-class SpriteFile &FioOpenFile(int slot, const std::string &filename, Subdirectory subdir, bool palette_remap = false);
-void FioReadBlock(void *ptr, size_t size);
-void FioSkipBytes(int n);
-class SpriteFile *FioGetSpriteFile(int slot);
-
 void FioFCloseFile(FILE *f);
 FILE *FioFOpenFile(const std::string &filename, const char *mode, Subdirectory subdir, size_t *filesize = nullptr);
 bool FioCheckFileExists(const std::string &filename, Subdirectory subdir);
diff --git a/src/fios.h b/src/fios.h
index 5029d4862f..34504d5e00 100644
--- a/src/fios.h
+++ b/src/fios.h
@@ -83,20 +83,6 @@ struct LoadCheckData {
 
 extern LoadCheckData _load_check_data;
 
-
-enum FileSlots {
-	/**
-	 * Slot used for the GRF scanning and such.
-	 * This slot is used for all temporary accesses to files when scanning/testing files,
-	 * and thus cannot be used for files, which are continuously accessed during a game.
-	 */
-	CONFIG_SLOT    =  0,
-	/** First slot usable for (New)GRFs used during the game. */
-	FIRST_GRF_SLOT =  2,
-	/** Maximum number of slots. */
-	MAX_FILE_SLOTS = 128,
-};
-
 /** Deals with finding savegames */
 struct FiosItem {
 	FiosType type;
diff --git a/src/openttd.cpp b/src/openttd.cpp
index d8b197466a..ea802b3db9 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -324,9 +324,6 @@ static void ShutdownGame()
 	/* No NewGRFs were loaded when it was still bootstrapping. */
 	if (_game_mode != GM_BOOTSTRAP) ResetNewGRFData();
 
-	/* Close all and any open filehandles */
-	FioCloseAll();
-
 	UninitFreeType();
 }