diff --git a/src/main.c b/src/main.c
index 6a78cc13..91573a2e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -311,6 +311,7 @@ int main( int argc, char *argv[] )
   a_toolbar_uninit ();
   a_background_uninit ();
   maps_layer_uninit ();
+  vik_dem_layer_uninit ();
   a_mapcache_uninit ();
   a_dems_uninit ();
   a_layer_defaults_uninit ();
diff --git a/src/vikdemlayer.c b/src/vikdemlayer.c
index f60e63cb..f25f2929 100644
--- a/src/vikdemlayer.c
+++ b/src/vikdemlayer.c
@@ -405,6 +405,11 @@ void vik_dem_layer_init ()
 
 }
 
+void vik_dem_layer_uninit ()
+{
+  g_free ( base_url );
+}
+
 static GdkColor black_color;
 
 // NB Only performed once per program run
diff --git a/src/vikdemlayer.h b/src/vikdemlayer.h
index 838af559..03cb6da8 100644
--- a/src/vikdemlayer.h
+++ b/src/vikdemlayer.h
@@ -43,6 +43,7 @@ GType vik_dem_layer_get_type ();
 typedef struct _VikDEMLayer VikDEMLayer;
 
 void vik_dem_layer_init ();
+void vik_dem_layer_uninit ();
 
 G_END_DECLS