diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
index b8b3af4ae837..1c608fc9068e 100644
--- a/modules/libpref/init/StaticPrefList.yaml
+++ b/modules/libpref/init/StaticPrefList.yaml
@@ -10958,7 +10958,7 @@
 
 - name: network.cookie.sameSite.schemeful
   type: bool
-  value: true
+  value: false
   mirror: always
 
 - name: network.cookie.thirdparty.sessionOnly