diff --git a/src/audio/AudioLogic.cpp b/src/audio/AudioLogic.cpp
index 78174f33..94ca67de 100644
--- a/src/audio/AudioLogic.cpp
+++ b/src/audio/AudioLogic.cpp
@@ -579,14 +579,13 @@ cAudioManager::ProcessVehicle(CVehicle *veh)
 	m_sQueueSample.m_vecPos = veh->GetPosition();
 
 	params.m_bDistanceCalculated = false;
-	params.m_fDistance = GetDistanceSquared(m_sQueueSample.m_vecPos);
 	params.m_pVehicle = veh;
-	params.m_pTransmission = nil;
-	params.m_nIndex = 0;
-	params.m_fVelocityChange = 0.0f;
+	params.m_fDistance = GetDistanceSquared(m_sQueueSample.m_vecPos);
 
 	if (handling != nil)
 		params.m_pTransmission = &handling->Transmission;
+	else
+		params.m_pTransmission = nil;
 
 	params.m_nIndex = veh->GetModelIndex() - MI_FIRST_VEHICLE;
 	if (params.m_pVehicle->GetStatus() == STATUS_SIMPLE)
diff --git a/src/audio/AudioManager.h b/src/audio/AudioManager.h
index 7fdfecc2..e3d91876 100644
--- a/src/audio/AudioManager.h
+++ b/src/audio/AudioManager.h
@@ -150,6 +150,16 @@ public:
 	cTransmission *m_pTransmission;
 	int32 m_nIndex;
 	float m_fVelocityChange;
+
+	cVehicleParams()
+	{
+		m_bDistanceCalculated = false;
+		m_fDistance = 0.0f;
+		m_pVehicle = 0;
+		m_pTransmission = nil;
+		m_nIndex = 0;
+		m_fVelocityChange = 0.0f;
+	}
 };
 
 VALIDATE_SIZE(cVehicleParams, 0x18);