diff --git a/src/java/org/thdl/lex/LexActionServlet.java b/src/java/org/thdl/lex/LexActionServlet.java
index 1128c27..b6a98e3 100644
--- a/src/java/org/thdl/lex/LexActionServlet.java
+++ b/src/java/org/thdl/lex/LexActionServlet.java
@@ -75,6 +75,7 @@ public class LexActionServlet extends HttpServlet
 		Global global = new Global( recentItems, refreshDelay );
 		config.getServletContext().setAttribute( LexConstants.GLOBAL_CONTEXT_ATTR, global );
 		LexLogger.debugComponent( global );
+		System.setProperty( "java.awt.headless", "true" );
 	}