diff --git a/tests/10-socket.t b/tests/10-socket.t
index 02c5cfe..0f7b858 100644
--- a/tests/10-socket.t
+++ b/tests/10-socket.t
@@ -23,6 +23,7 @@ use FindBin;
 use lib "$FindBin::Bin/lib/";
 
 use IPXWrapper::DOSBoxServer;
+use IPXWrapper::Tool::OSVersion;
 use IPXWrapper::Util;
 
 require "$FindBin::Bin/config.pm";
@@ -117,6 +118,12 @@ describe "IPXWrapper" => sub
 	
 	describe "using Ethernet encapsulation" => sub
 	{
+		if(!IPXWrapper::Tool::OSVersion->get($remote_ip_a)->platform_is_winnt())
+		{
+			# Skip Ethernet encapsulation tests under Windows 98
+			return;
+		}
+		
 		before all => sub
 		{
 			reg_delete_key($remote_ip_a, "HKCU\\Software\\IPXWrapper");
diff --git a/tests/15-interfaces.t b/tests/15-interfaces.t
index 243dd24..fd47ead 100644
--- a/tests/15-interfaces.t
+++ b/tests/15-interfaces.t
@@ -24,6 +24,7 @@ use lib "$FindBin::Bin/lib/";
 
 use IPXWrapper::DOSBoxServer;
 use IPXWrapper::Tool::Bind;
+use IPXWrapper::Tool::OSVersion;
 use IPXWrapper::Util;
 
 require "$FindBin::Bin/config.pm";
@@ -175,6 +176,13 @@ describe "IPXWrapper" => sub
 	
 	describe "using Ethernet encapsulation" => sub
 	{
+		if(!IPXWrapper::Tool::OSVersion->get($remote_ip_a)->platform_is_winnt())
+		{
+			# Skip these tests under Windows 98
+			it "(not implemented)";
+			return;
+		}
+		
 		before all => sub
 		{
 			reg_delete_key($remote_ip_a, "HKCU\\Software\\IPXWrapper");
@@ -206,6 +214,13 @@ describe "IPXWrapper" => sub
 	
 	describe "using Novell Ethernet encapsulation" => sub
 	{
+		if(!IPXWrapper::Tool::OSVersion->get($remote_ip_a)->platform_is_winnt())
+		{
+			# Skip these tests under Windows 98
+			it "(not implemented)";
+			return;
+		}
+		
 		before all => sub
 		{
 			reg_delete_key($remote_ip_a, "HKCU\\Software\\IPXWrapper");
@@ -237,6 +252,13 @@ describe "IPXWrapper" => sub
 	
 	describe "using LLC (802.2) Ethernet encapsulation" => sub
 	{
+		if(!IPXWrapper::Tool::OSVersion->get($remote_ip_a)->platform_is_winnt())
+		{
+			# Skip these tests under Windows 98
+			it "(not implemented)";
+			return;
+		}
+		
 		before all => sub
 		{
 			reg_delete_key($remote_ip_a, "HKCU\\Software\\IPXWrapper");
diff --git a/tests/30-eth-ipx.t b/tests/30-eth-ipx.t
index 2e21130..5fa2610 100644
--- a/tests/30-eth-ipx.t
+++ b/tests/30-eth-ipx.t
@@ -1,5 +1,5 @@
 # IPXWrapper test suite
-# Copyright (C) 2014-2017 Daniel Collins <solemnwarning@solemnwarning.net>
+# Copyright (C) 2014-2024 Daniel Collins <solemnwarning@solemnwarning.net>
 #
 # This program is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 as published by
@@ -26,6 +26,7 @@ use IPXWrapper::Capture::IPX;
 use IPXWrapper::Capture::IPXLLC;
 use IPXWrapper::Capture::IPXNovell;
 use IPXWrapper::Tool::IPXRecv;
+use IPXWrapper::Tool::OSVersion;
 use IPXWrapper::Util;
 
 require "$FindBin::Bin/config.pm";
@@ -623,6 +624,13 @@ shared_examples_for "ipx over ethernet" => sub
 
 describe "IPXWrapper using Ethernet encapsulation" => sub
 {
+	if(!IPXWrapper::Tool::OSVersion->get($remote_ip_a)->platform_is_winnt())
+	{
+		# Skip these tests under Windows 98.
+		it "(not implemented)";
+		return;
+	}
+	
 	before all => sub
 	{
 		reg_delete_key($remote_ip_a, "HKCU\\Software\\IPXWrapper");
@@ -641,6 +649,13 @@ describe "IPXWrapper using Ethernet encapsulation" => sub
 
 describe "IPXWrapper using Novell Ethernet encapsulation" => sub
 {
+	if(!IPXWrapper::Tool::OSVersion->get($remote_ip_a)->platform_is_winnt())
+	{
+		# Skip these tests under Windows 98.
+		it "(not implemented)";
+		return;
+	}
+	
 	before all => sub
 	{
 		reg_delete_key($remote_ip_a, "HKCU\\Software\\IPXWrapper");
@@ -659,6 +674,13 @@ describe "IPXWrapper using Novell Ethernet encapsulation" => sub
 
 describe "IPXWrapper using LLC (802.2) Ethernet encapsulation" => sub
 {
+	if(!IPXWrapper::Tool::OSVersion->get($remote_ip_a)->platform_is_winnt())
+	{
+		# Skip these tests under Windows 98.
+		it "(not implemented)";
+		return;
+	}
+	
 	before all => sub
 	{
 		reg_delete_key($remote_ip_a, "HKCU\\Software\\IPXWrapper");