diff --git a/src/nplinker/scoring/__init__.py b/src/nplinker/scoring/__init__.py
index 597fa4f9..6fcaac9c 100644
--- a/src/nplinker/scoring/__init__.py
+++ b/src/nplinker/scoring/__init__.py
@@ -1,4 +1,3 @@
-from .abc import ScoringBase
 from .link_graph import LinkGraph
 from .metcalf_scoring import MetcalfScoring
 from .score import Score
@@ -9,6 +8,5 @@
     "LinkGraph",
     "MetcalfScoring",
     "Score",
-    "ScoringBase",
     "ScoringMethod",
 ]