diff --git a/public/tier2/tier2.h b/public/tier2/tier2.h
index 8f71c525..ecbec1d7 100644
--- a/public/tier2/tier2.h
+++ b/public/tier2/tier2.h
@@ -1,4 +1,4 @@
-//===== Copyright © 2005-2005, Valve Corporation, All rights reserved. ======//
+//===== Copyright © 2005-2005, Valve Corporation, All rights reserved. ======//
 //
 // Purpose: A higher level link library for general use in the game and tools.
 //
@@ -84,7 +84,7 @@ public:
 		if ( !BaseClass::Connect( factory ) )
 			return false;
 
-		if ( IsPrimaryAppSystem() )
+		if ( BaseClass::IsPrimaryAppSystem() )
 		{
 			ConnectTier2Libraries( &factory, 1 );
 		}
@@ -93,7 +93,7 @@ public:
 
 	virtual void Disconnect() 
 	{
-		if ( IsPrimaryAppSystem() )
+		if ( BaseClass::IsPrimaryAppSystem() )
 		{
 			DisconnectTier2Libraries();
 		}
diff --git a/public/tier3/tier3.h b/public/tier3/tier3.h
index e51900a8..b6e5d532 100644
--- a/public/tier3/tier3.h
+++ b/public/tier3/tier3.h
@@ -1,4 +1,4 @@
-//===== Copyright © 2005-2005, Valve Corporation, All rights reserved. ======//
+//===== Copyright © 2005-2005, Valve Corporation, All rights reserved. ======//
 //
 // Purpose: A higher level link library for general use in the game and tools.
 //
@@ -74,7 +74,7 @@ public:
 		if ( !BaseClass::Connect( factory ) )
 			return false;
 
-		if ( IsPrimaryAppSystem() )
+		if ( BaseClass::IsPrimaryAppSystem() )
 		{
 			ConnectTier3Libraries( &factory, 1 );
 		}
@@ -83,7 +83,7 @@ public:
 
 	virtual void Disconnect() 
 	{
-		if ( IsPrimaryAppSystem() )
+		if ( BaseClass::IsPrimaryAppSystem() )
 		{
 			DisconnectTier3Libraries();
 		}