diff --git a/__init__.py b/__init__.py
index 273cd43..8c5bcf5 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,5 +1,9 @@
-from .nodes import NODE_CLASS_MAPPINGS, NODE_DISPLAY_NAME_MAPPINGS
-from .spectrum_h3_compat import install_spectrum_h3_compat
+if __package__:
+    from .nodes import NODE_CLASS_MAPPINGS, NODE_DISPLAY_NAME_MAPPINGS
+    from .spectrum_h3_compat import install_spectrum_h3_compat
+else:  # pragma: no cover - direct pytest/import fallback
+    from nodes import NODE_CLASS_MAPPINGS, NODE_DISPLAY_NAME_MAPPINGS
+    from spectrum_h3_compat import install_spectrum_h3_compat
 
 install_spectrum_h3_compat()