diff --git a/src/emu/memory.c b/src/emu/memory.c
index e7bcd511994..0b19dc94120 100644
--- a/src/emu/memory.c
+++ b/src/emu/memory.c
@@ -4076,8 +4076,7 @@ memory_block::memory_block(address_space &space, offs_t bytestart, offs_t byteen
 		m_space(space),
 		m_bytestart(bytestart),
 		m_byteend(byteend),
-		m_data(reinterpret_cast<UINT8 *>(memory)),
-		m_allocated(NULL)
+		m_data(reinterpret_cast<UINT8 *>(memory))
 {
 	VPRINTF(("block_allocate('%s',%s,%08X,%08X,%p)\n", space.device().tag(), space.name(), bytestart, byteend, memory));