diff --git a/plugins/feature/skymap/webserver.cpp b/plugins/feature/skymap/webserver.cpp
index 50403fb50..8de3099e6 100644
--- a/plugins/feature/skymap/webserver.cpp
+++ b/plugins/feature/skymap/webserver.cpp
@@ -43,6 +43,7 @@ WebServer::WebServer(quint16 &port, QObject* parent) :
 
 WebServer::~WebServer()
 {
+    qDeleteAll(m_substitutions);
     qDeleteAll(m_mimeTypes);
 }