diff --git a/gramps/gen/datehandler/_date_sl.py b/gramps/gen/datehandler/_date_sl.py
index 3fc5dea88..4764d4ab8 100644
--- a/gramps/gen/datehandler/_date_sl.py
+++ b/gramps/gen/datehandler/_date_sl.py
@@ -66,6 +66,7 @@ class DateParserSL(DateParser):
         'ca.'    : Date.MOD_ABOUT,
         'približno' : Date.MOD_ABOUT,
         'pribl.' : Date.MOD_ABOUT,
+        '~'      : Date.MOD_ABOUT,
         }
 
     quality_to_int = {