diff --git a/FDTD/extensions/engine_ext_excitation.cpp b/FDTD/extensions/engine_ext_excitation.cpp
index cd96690..ec328d2 100644
--- a/FDTD/extensions/engine_ext_excitation.cpp
+++ b/FDTD/extensions/engine_ext_excitation.cpp
@@ -101,7 +101,7 @@ void Engine_Ext_Excitation::Apply2Current()
 	{
 	case Engine::BASIC:
 		{
-			for (unsigned int n=0; n<m_Op_Exc->m_Exc->Volt_Count; ++n)
+			for (unsigned int n=0; n<m_Op_Exc->m_Exc->Curr_Count; ++n)
 			{
 				exc_pos = numTS - (int)m_Op_Exc->m_Exc->Curr_delay[n];
 				exc_pos *= (exc_pos>0 && exc_pos<=(int)m_Op_Exc->m_Exc->Length);
@@ -115,7 +115,7 @@ void Engine_Ext_Excitation::Apply2Current()
 		}
 	case Engine::SSE:
 		{
-			for (unsigned int n=0; n<m_Op_Exc->m_Exc->Volt_Count; ++n)
+			for (unsigned int n=0; n<m_Op_Exc->m_Exc->Curr_Count; ++n)
 			{
 				Engine_sse* eng_sse = (Engine_sse*) m_Eng;
 				exc_pos = numTS - (int)m_Op_Exc->m_Exc->Curr_delay[n];
@@ -130,7 +130,7 @@ void Engine_Ext_Excitation::Apply2Current()
 		}
 	default:
 		{
-			for (unsigned int n=0; n<m_Op_Exc->m_Exc->Volt_Count; ++n)
+			for (unsigned int n=0; n<m_Op_Exc->m_Exc->Curr_Count; ++n)
 			{
 				exc_pos = numTS - (int)m_Op_Exc->m_Exc->Curr_delay[n];
 				exc_pos *= (exc_pos>0 && exc_pos<=(int)m_Op_Exc->m_Exc->Length);
diff --git a/FDTD/extensions/operator_ext_excitation.h b/FDTD/extensions/operator_ext_excitation.h
index 8cab872..254967d 100644
--- a/FDTD/extensions/operator_ext_excitation.h
+++ b/FDTD/extensions/operator_ext_excitation.h
@@ -30,14 +30,14 @@ public:
 	Operator_Ext_Excitation(Operator* op, Excitation* exc);
 	~Operator_Ext_Excitation();
 
-	virtual Operator_Extension* Clone(Operator* op) {return NULL;}
+	virtual Operator_Extension* Clone(Operator* op) {UNUSED(op);return NULL;}
 
 	virtual bool BuildExtension();
 
 	virtual Engine_Extension* CreateEngineExtention();
 
 	virtual bool IsCylinderCoordsSave() const {return true;}
-	virtual bool IsCylindricalMultiGridSave(bool child) const {return true;}
+	virtual bool IsCylindricalMultiGridSave(bool child) const {UNUSED(child); return true;}
 
 	virtual string GetExtensionName() const {return string("Excitation Extension");}