diff --git a/src/manage_get.c b/src/manage_get.c
index 2b81ac2f8..3c9e151b9 100644
--- a/src/manage_get.c
+++ b/src/manage_get.c
@@ -154,18 +154,46 @@ get_iterator_comment (iterator_t* iterator)
  *
  * @param[in]  iterator  Iterator.
  *
- * @return Creation time of the resource or NULL if iteration is complete.
+ * @return Creation time, or NULL if iteration is complete. Caller must free.
  */
-DEF_ACCESS (get_iterator_creation_time, 4);
+gchar *
+get_iterator_creation_time (iterator_t* iterator)
+{
+  time_t epoch;
+  char *iso;
+
+  if (iterator->done) return NULL;
+
+  epoch = iterator_int64 (iterator, 4);
+  iso = iso_time (&epoch);
+  if (iso)
+    // iso points to static memory.
+    return g_strdup (iso);
+  return g_strdup("ERR");
+}
 
 /**
  * @brief Get the modification time of the resource from a GET iterator.
  *
  * @param[in]  iterator  Iterator.
  *
- * @return Modification time of the resource or NULL if iteration is complete.
+ * @return Modification time, or NULL if iteration is complete. Caller must free.
  */
-DEF_ACCESS (get_iterator_modification_time, 5);
+gchar *
+get_iterator_modification_time (iterator_t* iterator)
+{
+  time_t epoch;
+  char *iso;
+
+  if (iterator->done) return NULL;
+
+  epoch = iterator_int64 (iterator, 5);
+  iso = iso_time (&epoch);
+  if (iso)
+    // iso points to static memory.
+    return g_strdup (iso);
+  return g_strdup("ERR");
+}
 
 /**
  * @brief Get the owner name of the resource from a GET iterator.
diff --git a/src/manage_get.h b/src/manage_get.h
index 5c44e667c..a990825f1 100644
--- a/src/manage_get.h
+++ b/src/manage_get.h
@@ -66,10 +66,10 @@ get_iterator_name (iterator_t*);
 const char*
 get_iterator_comment (iterator_t*);
 
-const char*
+gchar*
 get_iterator_creation_time (iterator_t*);
 
-const char*
+gchar*
 get_iterator_modification_time (iterator_t*);
 
 const char*
diff --git a/src/manage_sql.h b/src/manage_sql.h
index 6ea3ac24c..e897075c1 100644
--- a/src/manage_sql.h
+++ b/src/manage_sql.h
@@ -248,9 +248,9 @@ typedef struct
  *
  * @param[in]  prefix  Column prefix.
  */
-#define GET_ITERATOR_COLUMNS_STRING                                \
-  "id, uuid, name, comment, iso_time (creation_time),"             \
-  " iso_time (modification_time), creation_time AS created,"       \
+#define GET_ITERATOR_COLUMNS_STRING                     \
+  "id, uuid, name, comment, creation_time,"             \
+  " modification_time, creation_time AS created,"       \
   " modification_time AS modified"
 
 /**
@@ -263,8 +263,8 @@ typedef struct
   { prefix "uuid", NULL, KEYWORD_TYPE_STRING },                             \
   { prefix "name", NULL, KEYWORD_TYPE_STRING },                             \
   { prefix "comment", NULL, KEYWORD_TYPE_STRING },                          \
-  { " iso_time (" prefix "creation_time)", NULL, KEYWORD_TYPE_STRING },     \
-  { " iso_time (" prefix "modification_time)", NULL, KEYWORD_TYPE_STRING }, \
+  { prefix "creation_time", NULL, KEYWORD_TYPE_INTEGER },                   \
+  { prefix "modification_time", NULL, KEYWORD_TYPE_INTEGER },               \
   { prefix "creation_time", "created", KEYWORD_TYPE_INTEGER },              \
   { prefix "modification_time", "modified", KEYWORD_TYPE_INTEGER }