diff --git a/ajax.php b/ajax.php
index 9bc0d3a..6f4e28a 100644
--- a/ajax.php
+++ b/ajax.php
@@ -7,7 +7,8 @@ include "include/tools.php";
 include "include/functions.php";
 
 $mmdvmconfigs = getMMDVMConfig();
-define("MMDVMLOGPREFIX", getConfigItem("Log", "FileRoot", $mmdvmconfigs));
+if (!defined("MMDVMLOGPREFIX"))
+	define("MMDVMLOGPREFIX", getConfigItem("Log", "FileRoot", $mmdvmconfigs));
 $logLinesMMDVM = getMMDVMLog();
 $reverseLogLinesMMDVM = $logLinesMMDVM;
 array_multisort($reverseLogLinesMMDVM,SORT_DESC);
diff --git a/include/init.php b/include/init.php
index 2d38351..7efe272 100644
--- a/include/init.php
+++ b/include/init.php
@@ -1,7 +1,8 @@
 <?php
 //Some basic inits
 $mmdvmconfigs = getMMDVMConfig();
-define("MMDVMLOGPREFIX", getConfigItem("Log", "FileRoot", $mmdvmconfigs));
+if (!defined("MMDVMLOGPREFIX"))
+	define("MMDVMLOGPREFIX", getConfigItem("Log", "FileRoot", $mmdvmconfigs));
 echo MMDVMLOGPREFIX;
 $logLinesMMDVM = getMMDVMLog();
 showLapTime("getMMDVMLog");
diff --git a/txinfo.php b/txinfo.php
index 7d4e4f0..8ea3305 100644
--- a/txinfo.php
+++ b/txinfo.php
@@ -6,7 +6,8 @@ include "config/config.php";
 include "include/tools.php";
 include "include/functions.php";
 $mmdvmconfigs = getMMDVMConfig();
-define("MMDVMLOGPREFIX", getConfigItem("Log", "FileRoot", $mmdvmconfigs));
+if (!defined("MMDVMLOGPREFIX"))
+	define("MMDVMLOGPREFIX", getConfigItem("Log", "FileRoot", $mmdvmconfigs));
 $logLinesMMDVM = getShortMMDVMLog();
 $reverseLogLinesMMDVM = $logLinesMMDVM;
 array_multisort($reverseLogLinesMMDVM,SORT_DESC);