diff --git a/spacy/lang/tn/__init__.py b/spacy/lang/tn/__init__.py
index 911214331..648772528 100644
--- a/spacy/lang/tn/__init__.py
+++ b/spacy/lang/tn/__init__.py
@@ -6,6 +6,7 @@ from ...language import Language
 
 class SetswanaDefaults(Language.Defaults):
     suffixes = TOKENIZER_SUFFIXES
+    infixes = TOKENIZER_INFIXES    
     stop_words = STOP_WORDS
     lex_attr_getters = LEX_ATTRS