diff --git a/src/mame/taito/gladiatr.cpp b/src/mame/taito/gladiatr.cpp
index b53e677cd39..c2c6d710a44 100644
--- a/src/mame/taito/gladiatr.cpp
+++ b/src/mame/taito/gladiatr.cpp
@@ -202,6 +202,8 @@ TODO:
 #include "screen.h"
 #include "speaker.h"
 
+#include <algorithm>
+
 
 MACHINE_RESET_MEMBER(gladiatr_state,gladiator)
 {
@@ -1368,15 +1370,6 @@ ROM_START( gcastle )
 ROM_END
 
 
-void gladiatr_state::swap_block(u8 *src1, u8 *src2, int len)
-{
-	for (int i = 0; i < len; i++)
-	{
-		using std::swap;
-		swap(src1[i], src2[i]);
-	}
-}
-
 void gladiatr_state::init_gladiatr()
 {
 	u8 *rom = memregion("gfx2")->base();
@@ -1390,7 +1383,7 @@ void gladiatr_state::init_gladiatr()
 		}
 	}
 	// sort data
-	swap_block(rom + 0x14000, rom + 0x18000, 0x4000);
+	std::swap_ranges(rom + 0x14000, rom + 0x18000, rom + 0x18000);
 
 
 	rom = memregion("gfx3")->base();
@@ -1404,10 +1397,10 @@ void gladiatr_state::init_gladiatr()
 		}
 	}
 	// sort data
-	swap_block(rom + 0x1a000, rom + 0x1c000, 0x2000);
-	swap_block(rom + 0x22000, rom + 0x28000, 0x2000);
-	swap_block(rom + 0x26000, rom + 0x2c000, 0x2000);
-	swap_block(rom + 0x24000, rom + 0x28000, 0x4000);
+	std::swap_ranges(rom + 0x1a000, rom + 0x1c000, rom + 0x1c000);
+	std::swap_ranges(rom + 0x22000, rom + 0x24000, rom + 0x28000);
+	std::swap_ranges(rom + 0x26000, rom + 0x28000, rom + 0x2c000);
+	std::swap_ranges(rom + 0x24000, rom + 0x28000, rom + 0x28000);
 
 	membank("bank1")->configure_entries(0, 2, memregion("maincpu")->base() + 0x10000, 0x6000);
 	membank("bank2")->configure_entries(0, 2, memregion("audiocpu")->base() + 0x10000, 0xc000);
diff --git a/src/mame/taito/gladiatr.h b/src/mame/taito/gladiatr.h
index 5451a5d974d..50e1a8a3c5e 100644
--- a/src/mame/taito/gladiatr.h
+++ b/src/mame/taito/gladiatr.h
@@ -146,7 +146,6 @@ private:
 	DECLARE_VIDEO_START(gladiatr);
 
 	uint32_t screen_update_gladiatr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-	static void swap_block(u8 *src1, u8 *src2, int len);
 
 	void gladiatr_cpu1_io(address_map &map);
 	void gladiatr_cpu1_map(address_map &map);