diff --git a/inst/cta/src/GCTAEventList.cpp b/inst/cta/src/GCTAEventList.cpp
index 2954e5f..e92f422 100644
--- a/inst/cta/src/GCTAEventList.cpp
+++ b/inst/cta/src/GCTAEventList.cpp
@@ -798,6 +798,10 @@ void GCTAEventList::dispose(void) const
     m_events.clear();
     m_columns.clear();
 
+    // Now actually remove the memory reserved for these objects
+    std::vector<GCTAEventAtom>(m_events).swap(m_events);
+    std::vector<GFitsTableCol*>(m_columns).swap(m_columns);
+
     // Return
     return;
 }