diff --git a/src/elogd.c b/src/elogd.c
index 0b4c719f..55062056 100755
--- a/src/elogd.c
+++ b/src/elogd.c
@@ -8725,16 +8725,18 @@ BOOL is_author(LOGBOOK * lbs, char attrib[MAX_N_ATTR][NAME_LENGTH], char *owner)
 
    if (i == lbs->n_attr) {
       /* if not found, search attribute which contains full_name of author */
-      get_full_name(lbs, getparam("unm"), full_name);
-      for (i = 0; i < lbs->n_attr; i++) {
-         sprintf(str, "Preset %s", attr_list[i]);
-         if (getcfg(lbs->name, str, preset, sizeof(preset))) {
-            if (strstr(preset, "$long_name")) {
-               if (strstr(attrib[i], full_name) == NULL) {
-                  strcpy(owner, attrib[i]);
-                  return FALSE;
-               } else
-                  break;
+      if (isparam("unm")) {
+         get_full_name(lbs, getparam("unm"), full_name);
+         for (i = 0; i < lbs->n_attr; i++) {
+            sprintf(str, "Preset %s", attr_list[i]);
+            if (getcfg(lbs->name, str, preset, sizeof(preset))) {
+               if (strstr(preset, "$long_name")) {
+                  if (strstr(attrib[i], full_name) == NULL) {
+                     strcpy(owner, attrib[i]);
+                     return FALSE;
+                  } else
+                     break;
+               }
             }
          }
       }