diff --git a/src/gswe-types.h b/src/gswe-types.h
index 46a70be..cc9ce0b 100644
--- a/src/gswe-types.h
+++ b/src/gswe-types.h
@@ -99,6 +99,9 @@ typedef enum {
     GSWE_PLANET_VERTEX
 } GswePlanet;
 
+/* Moon Apogee in astrology is often referred to as the Dark Moon, or Lilith */
+#define GSWE_PLANET_LILITH GSWE_PLANET_MOON_APOGEE
+
 /**
  * GsweZodiac:
  * @GSWE_SIGN_NONE: no sign