diff --git a/Contrib/ExDLL/SConscript b/Contrib/ExDLL/SConscript
index 89fbbc73..a0b0a527 100644
--- a/Contrib/ExDLL/SConscript
+++ b/Contrib/ExDLL/SConscript
@@ -47,7 +47,7 @@ if PerformPluginExtrasDistOperationOnce(plugin_envT, unicodetarget):
 	env.DistributeExamples(api_files, path='Plugin/nsis')
 	env.DistributeExamples(example, path='Plugin')
 	if env['PLATFORM'] != 'win32':
-		if env.has_key('PREFIX_PLUGINAPI_INC'):
+		if 'PREFIX_PLUGINAPI_INC' in env:
 			env.Distribute(api_files, None, 'pluginapi_inc', '', 'nsis', 'pluginapi', 'pluginapi')
 
 
@@ -56,7 +56,7 @@ if env['PLATFORM'] == 'win32':
 else:
 	example += lib_files
 
-	if env.has_key('PREFIX_PLUGINAPI_LIB'):
+	if 'PREFIX_PLUGINAPI_LIB' in env:
 		env.Distribute(lib, None, 'pluginapi_lib', '', 'nsis', 'pluginapi', 'pluginapi')