diff --git a/src/emu/cpu/hcd62121/hcd62121.c b/src/emu/cpu/hcd62121/hcd62121.c
index 648d09fb1ea..871e043df0a 100644
--- a/src/emu/cpu/hcd62121/hcd62121.c
+++ b/src/emu/cpu/hcd62121/hcd62121.c
@@ -31,6 +31,14 @@ hcd62121_cpu_device::hcd62121_cpu_device(const machine_config &mconfig, const ch
 	: cpu_device(mconfig, HCD62121, "Hitachi HCD62121", tag, owner, clock, "hcd62121", __FILE__)
 	, m_program_config("program", ENDIANNESS_BIG, 8, 24, 0)
 	, m_io_config("io", ENDIANNESS_BIG, 8, 8, 0)
+	, m_sp(0)
+	, m_ip(0)
+	, m_dsize(0)
+	, m_cseg(0)
+	, m_dseg(0)
+	, m_sseg(0)
+	, m_f(0)
+	, m_lar(0)
 {
 }