diff --git a/interface/TextMiningService.py b/interface/TextMiningService.py
index b5237e25735e769a8de430c6dba94b1b3a55a1ff..138eb81de99b6dec1461ffff8f62cbb72e0ac92f 100644
--- a/interface/TextMiningService.py
+++ b/interface/TextMiningService.py
@@ -26,7 +26,7 @@ class TextMiningService(metaclass=ABCMeta):
         pass
 
     @abstractmethod
-    def get_co_occurrences(self, entity: str) -> List[CoOccurrence]:
+    def get_co_occurrences(self, entity: str, limit: int = 20) -> List[CoOccurrence]:
         """
         Co-occurrences at publication level.