diff --git a/library/Director/PropertyModifier/PropertyModifierLConfCustomVar.php b/library/Director/PropertyModifier/PropertyModifierLConfCustomVar.php
index 827b8e20..6b617647 100644
--- a/library/Director/PropertyModifier/PropertyModifierLConfCustomVar.php
+++ b/library/Director/PropertyModifier/PropertyModifierLConfCustomVar.php
@@ -37,7 +37,7 @@ class PropertyModifierLConfCustomVar extends PropertyModifierHook
     protected function extractLConfVar($value, $vars)
     {
         list($key, $val) = preg_split('/ /', $value, 2);
-        $key = rtrim($key, '_');
+        $key = ltrim($key, '_');
         $vars->$key = $val;
     }
 }