diff --git a/src/net/sf/briar/lifecycle/WindowsShutdownManagerImpl.java b/src/net/sf/briar/lifecycle/WindowsShutdownManagerImpl.java
index d603975fe13d498319b2526ebbde139e381bfecd..677744832eac3dab3a0dba817e6bc6aee35f892f 100644
--- a/src/net/sf/briar/lifecycle/WindowsShutdownManagerImpl.java
+++ b/src/net/sf/briar/lifecycle/WindowsShutdownManagerImpl.java
@@ -2,7 +2,6 @@ package net.sf.briar.lifecycle;
 
 import static com.sun.jna.Library.OPTION_FUNCTION_MAPPER;
 import static com.sun.jna.Library.OPTION_TYPE_MAPPER;
-import static com.sun.jna.win32.W32APIFunctionMapper.UNICODE;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 
@@ -25,6 +24,8 @@ import com.sun.jna.platform.win32.WinDef.WPARAM;
 import com.sun.jna.platform.win32.WinUser.MSG;
 import com.sun.jna.win32.StdCallLibrary;
 import com.sun.jna.win32.StdCallLibrary.StdCallCallback;
+import com.sun.jna.win32.W32APIFunctionMapper;
+import com.sun.jna.win32.W32APITypeMapper;
 
 class WindowsShutdownManagerImpl extends ShutdownManagerImpl {
 
@@ -42,8 +43,8 @@ class WindowsShutdownManagerImpl extends ShutdownManagerImpl {
 	WindowsShutdownManagerImpl() {
 		// Use the Unicode versions of Win32 API calls
 		Map<String, Object> m = new HashMap<String, Object>();
-		m.put(OPTION_TYPE_MAPPER, UNICODE);
-		m.put(OPTION_FUNCTION_MAPPER, UNICODE);
+		m.put(OPTION_TYPE_MAPPER, W32APITypeMapper.UNICODE);
+		m.put(OPTION_FUNCTION_MAPPER, W32APIFunctionMapper.UNICODE);
 		options = Collections.unmodifiableMap(m);
 	}