diff --git a/src/gswe-timestamp.c b/src/gswe-timestamp.c
index abb4224..a925155 100644
--- a/src/gswe-timestamp.c
+++ b/src/gswe-timestamp.c
@@ -1341,6 +1341,8 @@ gswe_timestamp_new_from_gregorian_full(
 {
     GsweTimestamp *timestamp;
 
+    gswe_init();
+
     timestamp = GSWE_TIMESTAMP(g_object_new(GSWE_TYPE_TIMESTAMP,
                 "gregorian-year",            year,
                 "gregorian-month",           month,