diff --git a/src/xpath.c b/src/xpath.c
index ed24eb1..ddfdc06 100644
--- a/src/xpath.c
+++ b/src/xpath.c
@@ -1637,7 +1637,7 @@
     }
 
     /* find first top-level node to be used as anchor for positions */
-    for (root = set->cur_node; root->parent; root = lyd_parent(root)) {}
+    for (root = set->tree; root->parent; root = lyd_parent(root)) {}
     for ( ; root->prev->next; root = root->prev) {}
 
     /* fill positions */
@@ -4669,7 +4669,9 @@
     *pattern = calloc(1, sizeof **pattern);
     LOG_LOCSET(NULL, set->cur_node, NULL, NULL);
     rc = lys_compile_type_pattern_check(set->ctx, args[1]->val.str, &(*pattern)->code);
-    LOG_LOCBACK(0, 1, 0, 0);
+    if (set->cur_node) {
+        LOG_LOCBACK(0, 1, 0, 0);
+    }
     if (rc != LY_SUCCESS) {
         LY_ARRAY_FREE(patterns);
         return rc;
@@ -8735,7 +8737,9 @@
         lyxp_set_free_content(set);
     }
 
-    LOG_LOCBACK(0, 1, 0, 0);
+    if (set->cur_node) {
+        LOG_LOCBACK(0, 1, 0, 0);
+    }
     return rc;
 }