diff --git a/applications/MedApplication/custom_io/med_model_part_io.cpp b/applications/MedApplication/custom_io/med_model_part_io.cpp
index ea8d15ded07b..6b711f225d7d 100644
--- a/applications/MedApplication/custom_io/med_model_part_io.cpp
+++ b/applications/MedApplication/custom_io/med_model_part_io.cpp
@@ -491,7 +491,7 @@ void MedModelPartIO::ReadModelPart(ModelPart& rThisModelPart)
     const int dimension = mpFileHandler->GetDimension();
 
     // read family info => Map from family number to group names aka SubModelPart names
-    auto groups_by_fam = GetGroupsByFamily(
+    const auto groups_by_fam = GetGroupsByFamily(
         mpFileHandler->GetFileHandle(),
         mpFileHandler->GetMeshName());