diff --git a/src/Task.cpp b/src/Task.cpp
index 5c4ad37d1..adea3ae3b 100644
--- a/src/Task.cpp
+++ b/src/Task.cpp
@@ -443,7 +443,7 @@ void Task::parse (const std::string& input)
       throw std::string (STRING_RECORD_NOT_FF4);
   }
 
-  catch (std::string& e)
+  catch (const std::string&)
   {
     legacyParse (copy);
   }