diff --git a/bin/OpenSim.32BitLaunch.exe.config b/bin/OpenSim.32BitLaunch.exe.config
index a07ace3263..25776f2475 100644
--- a/bin/OpenSim.32BitLaunch.exe.config
+++ b/bin/OpenSim.32BitLaunch.exe.config
@@ -23,9 +23,11 @@
       </layout>
     </appender>
 
-    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
+    <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
       <file value="OpenSim.32BitLaunch.log" />
       <appendToFile value="true" />
+      <rollingStyle value="Date" />
+      <datePattern value="'.'yyyy-MM-dd"/>
       <filter type="log4net.Filter.LoggerMatchFilter">
         <loggerToMatch value="special"/>
         <acceptOnMatch value="false"/>
diff --git a/bin/OpenSim.exe.config b/bin/OpenSim.exe.config
index 1ec3c9ce75..8b48156340 100755
--- a/bin/OpenSim.exe.config
+++ b/bin/OpenSim.exe.config
@@ -23,9 +23,11 @@
       </layout>
     </appender>
 
-    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
+    <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
       <file value="OpenSim.log" />
       <appendToFile value="true" />
+      <rollingStyle value="Date" />
+      <datePattern value="'.'yyyy-MM-dd"/>
       <filter type="log4net.Filter.LoggerMatchFilter">
         <loggerToMatch value="special"/>
         <acceptOnMatch value="false"/>
diff --git a/bin/Robust.32BitLaunch.exe.config b/bin/Robust.32BitLaunch.exe.config
index f2802a20e2..3bae9ec45a 100644
--- a/bin/Robust.32BitLaunch.exe.config
+++ b/bin/Robust.32BitLaunch.exe.config
@@ -21,9 +21,11 @@
       </layout>
     </appender>
 
-    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
+    <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
       <file value="Robust.32BitLaunch.log" />
       <appendToFile value="true" />
+      <rollingStyle value="Date" />
+      <datePattern value="'.'yyyy-MM-dd"/>
       <filter type="log4net.Filter.LoggerMatchFilter">
         <loggerToMatch value="special"/>
         <acceptOnMatch value="false"/>
diff --git a/bin/Robust.exe.config b/bin/Robust.exe.config
index 6ffdfef670..889a9647fc 100644
--- a/bin/Robust.exe.config
+++ b/bin/Robust.exe.config
@@ -21,9 +21,11 @@
       </layout>
     </appender>
 
-    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
+    <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
       <file value="Robust.log" />
       <appendToFile value="true" />
+      <rollingStyle value="Date" />
+      <datePattern value="'.'yyyy-MM-dd"/>
       <filter type="log4net.Filter.LoggerMatchFilter">
         <loggerToMatch value="special"/>
         <acceptOnMatch value="false"/>