diff --git a/src/emu/sound/tms5220.c b/src/emu/sound/tms5220.c
index db2cde88acd..46e3ccf4129 100644
--- a/src/emu/sound/tms5220.c
+++ b/src/emu/sound/tms5220.c
@@ -1491,7 +1491,7 @@ void tms5220_device::device_reset()
 	m_old_frame_energy_idx = m_old_frame_pitch_idx = 0;
 	memset(m_old_frame_k_idx, 0, sizeof(m_old_frame_k_idx));
 #endif
-	m_new_frame_energy_idx = m_current_energy = m_target_energy = 0;
+	m_new_frame_energy_idx = m_current_energy = m_target_energy = m_previous_energy = 0;
 	m_new_frame_pitch_idx = m_current_pitch = m_target_pitch = 0;
 	memset(m_new_frame_k_idx, 0, sizeof(m_new_frame_k_idx));
 	memset(m_current_k, 0, sizeof(m_current_k));