diff --git a/src/gswe-antiscion-axis-info.c b/src/gswe-antiscion-axis-info.c
index cb4f967..10bb9aa 100644
--- a/src/gswe-antiscion-axis-info.c
+++ b/src/gswe-antiscion-axis-info.c
@@ -39,6 +39,10 @@ gswe_antiscion_axis_info_free(GsweAntiscionAxisInfo *antiscion_axis_info)
         g_free(antiscion_axis_info->name);
     }
 
+    if (antiscion_axis_info->start_sign != NULL) {
+        gswe_sign_info_unref(antiscion_axis_info->start_sign);
+    }
+
     g_free(antiscion_axis_info);
 }
 
diff --git a/src/gswe-antiscion-data.c b/src/gswe-antiscion-data.c
index c048c59..d9da91e 100644
--- a/src/gswe-antiscion-data.c
+++ b/src/gswe-antiscion-data.c
@@ -128,7 +128,9 @@ void
 gswe_antiscion_data_calculate(GsweAntiscionData *antiscion_data)
 {
     if ((antiscion_data->antiscion_axis_info = g_hash_table_find(gswe_antiscion_axis_info_table, (GHRFunc)find_antiscion, antiscion_data)) == NULL) {
-        antiscion_data->antiscion_axis_info = g_hash_table_lookup(gswe_antiscion_axis_info_table, GINT_TO_POINTER(GSWE_ANTISCION_AXIS_NONE));
+        antiscion_data->antiscion_axis_info = gswe_antiscion_axis_info_ref(g_hash_table_lookup(gswe_antiscion_axis_info_table, GINT_TO_POINTER(GSWE_ANTISCION_AXIS_NONE)));
+    } else {
+        gswe_antiscion_axis_info_ref(antiscion_data->antiscion_axis_info);
     }
 }
 
@@ -148,8 +150,8 @@ gswe_antiscion_data_new_with_planets(GswePlanetData *planet1, GswePlanetData *pl
     GsweAntiscionData *ret;
 
     ret = gswe_antiscion_data_new();
-    ret->planet1 = planet1;
-    ret->planet2 = planet2;
+    ret->planet1 = gswe_planet_data_ref(planet1);
+    ret->planet2 = gswe_planet_data_ref(planet2);
 
     gswe_antiscion_data_calculate(ret);
 
diff --git a/src/gswe-aspect-data.c b/src/gswe-aspect-data.c
index fb13c10..db0613c 100644
--- a/src/gswe-aspect-data.c
+++ b/src/gswe-aspect-data.c
@@ -93,6 +93,8 @@ gswe_aspect_data_calculate(GsweAspectData *aspect_data)
 
     if ((aspect_data->aspect_info = g_hash_table_find(gswe_aspect_info_table, (GHRFunc)find_aspect, aspect_data)) == NULL) {
         aspect_data->aspect_info = gswe_aspect_info_ref(g_hash_table_lookup(gswe_aspect_info_table, GINT_TO_POINTER(GSWE_ASPECT_NONE)));
+    } else {
+        gswe_aspect_info_ref(aspect_data->aspect_info);
     }
 }
 
diff --git a/src/gswe-moment.c b/src/gswe-moment.c
index 621e8c7..2bc08e3 100644
--- a/src/gswe-moment.c
+++ b/src/gswe-moment.c
@@ -630,10 +630,10 @@ gswe_moment_add_planet(GsweMoment *moment, GswePlanet planet, GError **err)
     }
 
     planet_data = gswe_planet_data_new();
-    planet_data->planet_info = planet_info;
+    planet_data->planet_info = gswe_planet_info_ref(planet_info);
     planet_data->revision = 0;
 
-    moment->priv->planet_list = g_list_append(moment->priv->planet_list, planet_data);
+    moment->priv->planet_list = g_list_append(moment->priv->planet_list, gswe_planet_data_ref(planet_data));
 }
 
 static void
diff --git a/src/swe-glib.c b/src/swe-glib.c
index 14cced1..52ad799 100644
--- a/src/swe-glib.c
+++ b/src/swe-glib.c
@@ -52,7 +52,8 @@ static gboolean gswe_initializing = FALSE;
     (v)->orb = (o); \
     (v)->name = g_strdup(n); \
     (v)->points = (h); \
-    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v));
+    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v)); \
+    gswe_planet_info_ref((v));
 
 #define ADD_SIGN(ht, v, s, n, e, q) \
     (v) = gswe_sign_info_new(); \
@@ -60,14 +61,16 @@ static gboolean gswe_initializing = FALSE;
     (v)->name = g_strdup(n); \
     (v)->element = (e); \
     (v)->quality = (q); \
-    g_hash_table_replace((ht), GINT_TO_POINTER(s), (v));
+    g_hash_table_replace((ht), GINT_TO_POINTER(s), (v)); \
+    gswe_sign_info_ref((v));
 
 #define ADD_HOUSE_SYSTEM(ht, v, i, s, n) \
     (v) = gswe_house_system_info_new(); \
     (v)->house_system = i; \
     (v)->sweph_id = s; \
     (v)->name = g_strdup(n); \
-    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v));
+    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v)); \
+    gswe_house_system_info_ref((v));
 
 #define ADD_ASPECT(ht, v, i, n, s, o, h, m) \
     (v) = gswe_aspect_info_new(); \
@@ -77,7 +80,8 @@ static gboolean gswe_initializing = FALSE;
     (v)->orb_modifier = (o); \
     (v)->harmonic = (h); \
     (v)->major = (m); \
-    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v));
+    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v)); \
+    gswe_aspect_info_ref((v));
 
 #define ADD_ANTISCION(ht, v, hts, vs, i, n, s, m) \
     (v) = gswe_antiscion_axis_info_new(); \
@@ -86,7 +90,8 @@ static gboolean gswe_initializing = FALSE;
     (v)->start_sign = (vs); \
     (v)->name = g_strdup(n); \
     (v)->sign_offset = m; \
-    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v));
+    g_hash_table_replace((ht), GINT_TO_POINTER(i), (v)); \
+    gswe_antiscion_axis_info_ref((v));
 
 /**
  * gswe_error_quark: