diff --git a/common/lib_tree_model_adapter.cpp b/common/lib_tree_model_adapter.cpp
index dfdd3997c2..95cf59d743 100644
--- a/common/lib_tree_model_adapter.cpp
+++ b/common/lib_tree_model_adapter.cpp
@@ -361,6 +361,9 @@ void LIB_TREE_MODEL_ADAPTER::OnSize( wxSizeEvent& aEvent )
 {
     m_colWidths[NAME_COL] = m_col_part->GetWidth();
     m_col_desc->SetWidth( m_colWidths[DESC_COL] );
+
+    // Mandatory in any wxSizeEvent handler:
+    aEvent.Skip();
 }