diff --git a/public/raw/sg-license-error.php b/public/raw/sg-license-error.php
index 050c756..dcd546c 100644
--- a/public/raw/sg-license-error.php
+++ b/public/raw/sg-license-error.php
@@ -1,31 +1,37 @@
 <?php
-function btw_license_error($code, $message)
+if (!function_exists('btw_license_error'))
 {
-    // Remove an invalid license file - relevant to index.php as that's the main entry script
-    $licenseFile = sprintf('%s/blue-twilight.lic', dirname(__DIR__));
-
-    if (file_exists($licenseFile))
+    function btw_license_error($code, $message)
     {
-        $number = 0;
-        do
-        {
-            $backupFilename = sprintf('%s_invalid.%d', $licenseFile, $number++);
-        } while (file_exists($backupFilename));
+        // Remove an invalid license file - relevant to index.php as that's the main entry script
+        $licenseFile = sprintf('%s/blue-twilight.lic', dirname(__DIR__));
 
-        // Rename or remove the file
-        if (!rename($licenseFile, $backupFilename))
+        if (file_exists($licenseFile))
         {
-            @unlink($licenseFile);
+            $number = 0;
+            do
+            {
+                $backupFilename = sprintf('%s_invalid.%d', $licenseFile, $number++);
+            } while (file_exists($backupFilename));
+
+            // Rename or remove the invalid file
+            if (!rename($licenseFile, $backupFilename))
+            {
+                @unlink($licenseFile);
+            }
         }
-    }
 
-    header(sprintf('Location: license-required.php?licerror=%d', $code));
-    exit();
+        header(sprintf('Location: license-required.php?licerror=%d', $code));
+        exit();
+    }
 }
 
-function btw_loader_error()
+if (!function_exists('btw_loader_error'))
 {
-    header('Location: loader-required.php');
-    exit();
+    function btw_loader_error()
+    {
+        header('Location: loader-required.php');
+        exit();
+    }
 }
 ?>
\ No newline at end of file