diff --git a/activity_browser/layouts/tabs/impact_categories.py b/activity_browser/layouts/tabs/impact_categories.py
index 7270cec29..bd2b74255 100644
--- a/activity_browser/layouts/tabs/impact_categories.py
+++ b/activity_browser/layouts/tabs/impact_categories.py
@@ -39,6 +39,7 @@ def __init__(self, parent, method_tuple):
 
         self.method = bd.Method(method_tuple)
         self.cf_table.model.load(self.method)
+        self.cf_table.hide_uncertain()
         self.cf_table.show()
         self.panel.select_tab(self)