1 files changed, 1 insertions, 1 deletions
diff --git a/slideshow/source/engine/activities/activityparameters.hxx b/slideshow/source/engine/activities/activityparameters.hxx
index 67b3a893a902..1faa1dd26d60 100644
--- a/slideshow/source/engine/activities/activityparameters.hxx
+++ b/slideshow/source/engine/activities/activityparameters.hxx
@@ -110,7 +110,7 @@ struct ActivityParameters
     ActivitiesQueue&                            mrActivitiesQueue;
 
     /// Optional formula
-    ExpressionNodeSharedPtr                     mpFormula;
+    std::shared_ptr<ExpressionNode>                     mpFormula;
 
     /// Key times, for discrete and key time activities
     ::std::vector< double >                     maDiscreteTimes;