diff --git a/data/eu.polonkai.gergely.astrognome.gschema.xml b/data/eu.polonkai.gergely.astrognome.gschema.xml
index 2d03e80..b2b17a7 100644
--- a/data/eu.polonkai.gergely.astrognome.gschema.xml
+++ b/data/eu.polonkai.gergely.astrognome.gschema.xml
@@ -1,4 +1,10 @@
 <schemalist gettext-domain="astrognome">
+    <enum id="eu.polonkai.gergely.Astrognome.GsweHouseSystem">
+        <value nick="none" value="0"/>
+        <value nick="placidus" value="1"/>
+        <value nick="koch" value="2"/>
+        <value nick="equal" value="3"/>
+    </enum>
     <schema id="eu.polonkai.gergely.Astrognome" path="/eu/polonkai/gergely/Astrognome/">
         <child name="state" schema="eu.polonkai.gergely.Astrognome.state" />
         <key name="planets-char" type="b">
@@ -11,6 +17,11 @@
             <summary>Display aspect symbols as UTF-8 characters</summary>
             <description>Whether to show aspect symbols as their UTF-8 representation. Uses less memory, but not all system fonts have them defined. If an aspect don’t have a character representation, an image fallback will be used.</description>
         </key>
+        <key name="default-house-system" enum="eu.polonkai.gergely.Astrognome.GsweHouseSystem">
+            <default>'placidus'</default>
+            <summary>The default house system</summary>
+            <description>The house system to use by default in new charts</description>
+        </key>
     </schema>
     <schema id="eu.polonkai.gergely.Astrognome.state" path="/eu/polonkai/gergely/Astrognome/state/">
         <child name="window" schema="eu.polonkai.gergely.Astrognome.state.window" />
diff --git a/src/ag-chart.c b/src/ag-chart.c
index 0b62486..1639f35 100644
--- a/src/ag-chart.c
+++ b/src/ag-chart.c
@@ -833,16 +833,10 @@ ag_chart_load_from_file(GFile *file, GError **err)
 
     g_variant_get(house_system, "ms", &house_system_name);
     g_variant_unref(house_system);
-    house_system_enum_name = g_utf8_strup(house_system_name, -1);
-    g_free(house_system_name);
-    house_system_name = house_system_enum_name;
-    house_system_enum_name = g_strdup_printf(
-            "GSWE_HOUSE_SYSTEM_%s",
-            house_system_name
-        );
+    house_system_enum_name = g_utf8_strdown(house_system_name, -1);
     g_free(house_system_name);
     house_system_class = g_type_class_ref(GSWE_TYPE_HOUSE_SYSTEM);
-    if ((enum_value = g_enum_get_value_by_name(
+    if ((enum_value = g_enum_get_value_by_nick(
                  G_ENUM_CLASS(house_system_class),
                  house_system_enum_name
              )) == NULL) {
@@ -854,6 +848,7 @@ ag_chart_load_from_file(GFile *file, GError **err)
         g_variant_unref(city);
         ag_g_variant_unref(note);
         g_type_class_unref(house_system_class);
+        g_free(house_system_enum_name);
 
         g_set_error(err,
                     AG_CHART_ERROR, AG_CHART_ERROR_CORRUPT_FILE,
@@ -918,6 +913,8 @@ create_save_doc(AgChart *chart)
     gchar           *value;
     GsweCoordinates *coordinates;
     GsweTimestamp   *timestamp;
+    GEnumClass      *house_system_class;
+    GEnumValue      *enum_value;
 
     doc       = xmlNewDoc(BAD_CAST "1.0");
     root_node = xmlNewNode(NULL, BAD_CAST "chartinfo");
@@ -1015,6 +1012,19 @@ create_save_doc(AgChart *chart)
     xmlNewChild(time_node, NULL, BAD_CAST "timezone", BAD_CAST value);
     g_free(value);
 
+    house_system_class = g_type_class_ref(GSWE_TYPE_HOUSE_SYSTEM);
+    enum_value = g_enum_get_value(
+            house_system_class,
+            gswe_moment_get_house_system(GSWE_MOMENT(chart))
+        );
+    xmlNewChild(
+            data_node,
+            NULL,
+            BAD_CAST "housesystem",
+            BAD_CAST enum_value->value_nick
+        );
+    g_type_class_unref(house_system_class);
+
     if (ag_chart_get_note(chart)) {
         xmlNewChild(
                 root_node,
diff --git a/src/ag-window.c b/src/ag-window.c
index 2604acb..406b96f 100644
--- a/src/ag-window.c
+++ b/src/ag-window.c
@@ -636,7 +636,7 @@ ag_window_redraw_chart(AgWindow *window)
 }
 
 static gboolean
-ag_window_find_house_system(GtkTreeModel *model,
+ag_window_set_house_system(GtkTreeModel *model,
                             GtkTreePath  *path,
                             GtkTreeIter  *iter,
                             AgWindow     *window)
@@ -721,7 +721,7 @@ ag_window_update_from_chart(AgWindow *window)
 
     gtk_tree_model_foreach(
             GTK_TREE_MODEL(priv->house_system_model),
-            (GtkTreeModelForeachFunc)ag_window_find_house_system,
+            (GtkTreeModelForeachFunc)ag_window_set_house_system,
             window
         );
 
@@ -947,6 +947,39 @@ ag_window_add_house_system(GsweHouseSystemInfo *house_system_info,
         );
 }
 
+static gboolean
+ag_window_set_default_house_system(GtkTreeModel *model,
+                            GtkTreePath  *path,
+                            GtkTreeIter  *iter,
+                            AgWindow     *window)
+{
+    GsweHouseSystem row_house_system;
+    AgWindowPrivate *priv          = ag_window_get_instance_private(window);
+    AgSettings      *settings      = ag_settings_get();
+    GSettings       *main_settings = ag_settings_peek_main_settings(settings);
+    GsweHouseSystem house_system   = g_settings_get_enum(
+            main_settings,
+            "default-house-system"
+        );
+
+    g_object_unref(settings);
+
+    gtk_tree_model_get(
+            GTK_TREE_MODEL(priv->house_system_model),
+            iter,
+            0, &row_house_system,
+            -1
+        );
+
+    if (house_system == row_house_system) {
+        gtk_combo_box_set_active_iter(GTK_COMBO_BOX(priv->house_system), iter);
+
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
 static void
 ag_window_init(AgWindow *window)
 {
@@ -977,6 +1010,11 @@ ag_window_init(AgWindow *window)
     house_system_list = gswe_all_house_systems();
     g_list_foreach(house_system_list, (GFunc)ag_window_add_house_system, priv);
     g_list_free(house_system_list);
+    gtk_tree_model_foreach(
+            GTK_TREE_MODEL(priv->house_system_model),
+            (GtkTreeModelForeachFunc)ag_window_set_default_house_system,
+            window
+        );
 
     house_system_renderer = gtk_cell_renderer_text_new();
     gtk_cell_layout_pack_start(