diff --git a/src/mame/machine/kaneko_calc3.cpp b/src/mame/machine/kaneko_calc3.cpp
index 79b20362875..a05ffaae412 100644
--- a/src/mame/machine/kaneko_calc3.cpp
+++ b/src/mame/machine/kaneko_calc3.cpp
@@ -1338,9 +1338,9 @@ int kaneko_calc3_device::decompress_table(int tabnum, UINT8* dstram, int dstoffs
 					{
 						eeprom_serial_93cxx_device *eeprom = space.machine().device<eeprom_serial_93cxx_device>(":eeprom");
 
-						for (i=0;i<0x80;i++)
+						for (i=0;i<0x40;i++)
 						{
-							eeprom->internal_write(i, space.read_byte(m_eeprom_addr+0x200000+i));
+							eeprom->internal_write(i, space.read_word(m_eeprom_addr+0x200000+2*i));
 						}
 
 					}