diff --git a/source/org/thdl/quilldriver/QDShell.java b/source/org/thdl/quilldriver/QDShell.java
index 64243af..7a9ff05 100644
--- a/source/org/thdl/quilldriver/QDShell.java
+++ b/source/org/thdl/quilldriver/QDShell.java
@@ -36,7 +36,7 @@ public class QDShell extends JFrame {
 
 	public static void main(String[] args) {
 		try {
-			ThdlDebug.attemptToSetUpLogFile("qd.log");
+			ThdlDebug.attemptToSetUpLogFile("qd", ".log");
 
 			Locale locale;
 
diff --git a/source/org/thdl/savant/SavantShell.java b/source/org/thdl/savant/SavantShell.java
index 228b7b0..61fc640 100644
--- a/source/org/thdl/savant/SavantShell.java
+++ b/source/org/thdl/savant/SavantShell.java
@@ -46,7 +46,7 @@ public class SavantShell extends JFrame
 
 	public static void main(String[] args) {
 		try {
-			ThdlDebug.attemptToSetUpLogFile("savant.log");
+			ThdlDebug.attemptToSetUpLogFile("savant", ".log");
 
 			try {
 				UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());