diff --git a/css/properties.json b/css/properties.json
index 804515b7..2850688b 100644
--- a/css/properties.json
+++ b/css/properties.json
@@ -6624,7 +6624,7 @@
     "groups": [
       "CSS Masking"
     ],
-    "initial": "no-repeat",
+    "initial": "repeat",
     "appliesto": "allElementsSVGContainerElements",
     "computed": "consistsOfTwoDimensionKeywords",
     "order": "perGrammar",
@@ -8627,7 +8627,7 @@
     "groups": [
       "CSS Animations"
     ],
-    "initial": "none",
+    "initial": "block",
     "appliesto": "scrollContainers",
     "computed": "asSpecified",
     "order": "perGrammar",