diff --git a/api/__init__.py b/api/__init__.py
index 9c4af0f..98971a5 100644
--- a/api/__init__.py
+++ b/api/__init__.py
@@ -30,7 +30,7 @@ from .s0_base import is_link, is_pipe, is_pump, is_valve
 from .s0_base import is_curve
 from .s0_base import is_pattern
 from .s0_base import get_nodes, get_links, get_curves, get_patterns
-from .s0_base import get_node_links
+from .s0_base import get_node_links, get_link_nodes
 
 from .s1_title import get_title_schema, get_title, set_title