diff --git a/src/fileio.cpp b/src/fileio.cpp
index 34b3cf8350..09329b84f5 100644
--- a/src/fileio.cpp
+++ b/src/fileio.cpp
@@ -33,6 +33,7 @@ struct Fio {
 	FILE *handles[MAX_FILE_SLOTS];         ///< array of file handles we can have open
 	byte buffer_start[FIO_BUFFER_SIZE];    ///< local buffer when read from file
 	const char *filenames[MAX_FILE_SLOTS]; ///< array of filenames we (should) have open
+	char *shortnames[MAX_FILE_SLOTS];///< array of short names for spriteloader's use
 #if defined(LIMITED_FDS)
 	uint open_handles;                     ///< current amount of open handles
 	uint usage_count[MAX_FILE_SLOTS];      ///< count how many times this file has been opened
@@ -47,9 +48,9 @@ uint32 FioGetPos()
 	return _fio.pos + (_fio.buffer - _fio.buffer_start) - FIO_BUFFER_SIZE;
 }
 
-const char *FioGetFilename()
+const char *FioGetFilename(uint8 slot)
 {
-	return _fio.filename;
+	return _fio.shortnames[slot];
 }
 
 void FioSeekTo(uint32 pos, int mode)
@@ -131,6 +132,10 @@ static inline void FioCloseFile(int slot)
 {
 	if (_fio.handles[slot] != NULL) {
 		fclose(_fio.handles[slot]);
+
+		free(_fio.shortnames[slot]);
+		_fio.shortnames[slot] = NULL;
+
 		_fio.handles[slot] = NULL;
 #if defined(LIMITED_FDS)
 		_fio.open_handles--;
@@ -184,6 +189,14 @@ void FioOpenFile(int slot, const char *filename)
 	FioCloseFile(slot); // if file was opened before, close it
 	_fio.handles[slot] = f;
 	_fio.filenames[slot] = filename;
+
+	/* Store the filename without path and extension */
+	const char *t = strrchr(filename, PATHSEPCHAR);
+	_fio.shortnames[slot] = strdup(t == NULL ? filename : t);
+	char *t2 = strrchr(_fio.shortnames[slot], '.');
+	if (t2 != NULL) *t2 = '\0';
+	strtolower(_fio.shortnames[slot]);
+
 #if defined(LIMITED_FDS)
 	_fio.usage_count[slot] = 0;
 	_fio.open_handles++;
diff --git a/src/fileio.h b/src/fileio.h
index d60d8ed2e6..881c983f3c 100644
--- a/src/fileio.h
+++ b/src/fileio.h
@@ -12,7 +12,7 @@
 void FioSeekTo(uint32 pos, int mode);
 void FioSeekToFile(uint8 slot, uint32 pos);
 uint32 FioGetPos();
-const char *FioGetFilename();
+const char *FioGetFilename(uint8 slot);
 byte FioReadByte();
 uint16 FioReadWord();
 uint32 FioReadDword();
diff --git a/src/spritecache.cpp b/src/spritecache.cpp
index 48c4d67e28..0db8899460 100644
--- a/src/spritecache.cpp
+++ b/src/spritecache.cpp
@@ -24,7 +24,6 @@ uint _sprite_cache_size = 4;
 
 struct SpriteCache {
  	void *ptr;
-	const char *grf_name;
 	uint32 id;
  	uint32 file_pos;
 	uint16 file_slot;
@@ -143,7 +142,7 @@ static void* ReadSprite(SpriteCache *sc, SpriteID id, bool real_sprite)
 		SpriteLoaderPNG sprite_loader;
 		SpriteLoader::Sprite sprite;
 
-		if (sprite_loader.LoadSprite(&sprite, sc->grf_name, 0, sc->id)) {
+		if (sprite_loader.LoadSprite(&sprite, file_slot, sc->id)) {
 			sc->ptr = BlitterFactoryBase::GetCurrentBlitter()->Encode(&sprite, &AllocSprite);
 			free(sprite.data);
 
@@ -230,7 +229,7 @@ static void* ReadSprite(SpriteCache *sc, SpriteID id, bool real_sprite)
 	SpriteLoaderGrf sprite_loader;
 	SpriteLoader::Sprite sprite;
 
-	if (!sprite_loader.LoadSprite(&sprite, sc->grf_name, file_slot, file_pos)) return NULL;
+	if (!sprite_loader.LoadSprite(&sprite, file_slot, file_pos)) return NULL;
 	if (id == 142) sprite.height = 10; // Compensate for a TTD bug
 	sc->ptr = BlitterFactoryBase::GetCurrentBlitter()->Encode(&sprite, &AllocSprite);
 	free(sprite.data);
@@ -257,19 +256,6 @@ bool LoadNextSprite(int load_index, byte file_slot, uint file_sprite_id)
 	sc->lru = 0;
 	sc->id = file_sprite_id;
 
-	const char *fio_grf_name = FioGetFilename();
-	const char *t = strrchr(fio_grf_name, PATHSEPCHAR);
-	char *grf_name;
-	if (t == NULL) grf_name = strdup(fio_grf_name);
-	else           grf_name = strdup(t);
-	/* Make the string lowercase and strip extension */
-	char *t2 = strrchr(grf_name, '.');
-	if (t2 != NULL) *t2 = '\0';
-	strtolower(grf_name);
-
-	free((char *)sc->grf_name);
-	sc->grf_name = grf_name;
-
 	return true;
 }
 
@@ -283,8 +269,6 @@ void DupSprite(SpriteID old_spr, SpriteID new_spr)
 	scnew->file_pos = scold->file_pos;
 	scnew->ptr = NULL;
 	scnew->id = scold->id;
-	free((char *)scnew->grf_name);
-	scnew->grf_name = strdup(scold->grf_name);
 }
 
 
@@ -493,7 +477,6 @@ void GfxInitSpriteMem()
 	NextBlock(_spritecache_ptr)->size = 0;
 
 	/* Reset the spritecache 'pool' */
-	for (uint i = 0; i < _spritecache_items; i++) free((char *)_spritecache[i].grf_name);
 	free(_spritecache);
 	_spritecache_items = 0;
 	_spritecache = NULL;
diff --git a/src/spriteloader/grf.cpp b/src/spriteloader/grf.cpp
index d0bc0e334e..bbc9d3f8f7 100644
--- a/src/spriteloader/grf.cpp
+++ b/src/spriteloader/grf.cpp
@@ -9,7 +9,7 @@
 #include "../core/alloc_func.hpp"
 #include "grf.hpp"
 
-bool SpriteLoaderGrf::LoadSprite(SpriteLoader::Sprite *sprite, const char *filename, uint8 file_slot, uint32 file_pos)
+bool SpriteLoaderGrf::LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, uint32 file_pos)
 {
 	/* Open the right file and go to the correct position */
 	FioSeekToFile(file_slot, file_pos);
diff --git a/src/spriteloader/grf.hpp b/src/spriteloader/grf.hpp
index fe94053392..65b5f62339 100644
--- a/src/spriteloader/grf.hpp
+++ b/src/spriteloader/grf.hpp
@@ -12,7 +12,7 @@ public:
 	/**
 	 * Load a sprite from the disk and return a sprite struct which is the same for all loaders.
 	 */
-	bool LoadSprite(SpriteLoader::Sprite *sprite, const char *filename, uint8 file_slot, uint32 file_pos);
+	bool LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, uint32 file_pos);
 };
 
 #endif /* SPRITELOADER_GRF_HPP */
diff --git a/src/spriteloader/png.cpp b/src/spriteloader/png.cpp
index abfce00fa0..2af9d02530 100644
--- a/src/spriteloader/png.cpp
+++ b/src/spriteloader/png.cpp
@@ -181,8 +181,9 @@ static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 i
 	return true;
 }
 
-bool SpriteLoaderPNG::LoadSprite(SpriteLoader::Sprite *sprite, const char *filename, uint8 file_slot, uint32 file_pos)
+bool SpriteLoaderPNG::LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, uint32 file_pos)
 {
+	const char *filename = FioGetFilename(file_slot);
 	if (!LoadPNG(sprite, filename, file_pos, false)) return false;
 	if (!LoadPNG(sprite, filename, file_pos, true)) return false;
 	return true;
diff --git a/src/spriteloader/png.hpp b/src/spriteloader/png.hpp
index eb3719180e..7d821dc714 100644
--- a/src/spriteloader/png.hpp
+++ b/src/spriteloader/png.hpp
@@ -12,7 +12,7 @@ public:
 	/**
 	 * Load a sprite from the disk and return a sprite struct which is the same for all loaders.
 	 */
-	bool LoadSprite(SpriteLoader::Sprite *sprite, const char *filename, uint8 file_slot, uint32 file_pos);
+	bool LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, uint32 file_pos);
 };
 
 #endif /* SPRITELOADER_PNG_HPP */
diff --git a/src/spriteloader/spriteloader.hpp b/src/spriteloader/spriteloader.hpp
index 47d1b7d405..09ad505a88 100644
--- a/src/spriteloader/spriteloader.hpp
+++ b/src/spriteloader/spriteloader.hpp
@@ -26,7 +26,7 @@ public:
 	/**
 	 * Load a sprite from the disk and return a sprite struct which is the same for all loaders.
 	 */
-	virtual bool LoadSprite(SpriteLoader::Sprite *sprite, const char *filename, uint8 file_slot, uint32 file_pos) = 0;
+	virtual bool LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, uint32 file_pos) = 0;
 
 	virtual ~SpriteLoader() { }
 };