diff --git a/src/engine/sixtp-dom-parsers.h b/src/engine/sixtp-dom-parsers.h
index 0ee222b7a2..2edfa71d6c 100644
--- a/src/engine/sixtp-dom-parsers.h
+++ b/src/engine/sixtp-dom-parsers.h
@@ -48,7 +48,6 @@ Timespec* dom_tree_to_timespec(xmlNodePtr node);
 gnc_numeric* dom_tree_to_gnc_numeric(xmlNodePtr node);
 gchar * dom_tree_to_text(xmlNodePtr tree);
 gboolean string_to_binary(const gchar *str,  void **v, guint64 *data_len);
-gboolean string_to_integer(const char *content, gint64 *to);
 
 kvp_frame* dom_tree_to_kvp_frame(xmlNodePtr node);
 kvp_value* dom_tree_to_kvp_value(xmlNodePtr node);