diff --git a/src/libcalamares/PythonJob.cpp b/src/libcalamares/PythonJob.cpp
index cd066b8bd..6944f38e5 100644
--- a/src/libcalamares/PythonJob.cpp
+++ b/src/libcalamares/PythonJob.cpp
@@ -284,7 +284,7 @@ PythonJob::exec()
             return JobResult::error( message, description );
         }
     }
-    catch ( bp::error_already_set )
+    catch ( bp::error_already_set& )
     {
         QString msg;
         if ( PyErr_Occurred() )