diff --git a/graphstorm-processing/graphstorm_processing/config/hard_negative_configs.py b/graphstorm-processing/graphstorm_processing/config/hard_negative_configs.py
index cc732fe80c..42d63f9d40 100644
--- a/graphstorm-processing/graphstorm_processing/config/hard_negative_configs.py
+++ b/graphstorm-processing/graphstorm_processing/config/hard_negative_configs.py
@@ -20,7 +20,7 @@
 
 
 class HardNegativeConfig(FeatureConfig):
-    """Feature configuration for hard negative feature. Now only support link prediction
+    """Feature configuration for hard negative feature. Now only support link prediction.
 
     Supported kwargs
     ----------------