diff --git a/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy b/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
index 5b093897..125145e3 100644
--- a/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
+++ b/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
@@ -5,7 +5,7 @@ import java.util.regex.Pattern
 
 // simplified switch/case pattern matching
 Object.metaClass.match = { Map cases -> def val = delegate; cases.findResult { switch(val) { case it.key: return it.value} } }
-def x(c) { try { c.call() } catch (Throwable e) { null } }
+def c(c) { try { c.call() } catch (Throwable e) { null } }
 
 
 /**