diff --git a/css/at-rules/font-face.json b/css/at-rules/font-face.json
index 45bab3896ac55d..a6b0ca68b570a0 100644
--- a/css/at-rules/font-face.json
+++ b/css/at-rules/font-face.json
@@ -510,7 +510,7 @@
               "opera": "mirror",
               "opera_android": "mirror",
               "safari": {
-                "version_added": false
+                "version_added": "9.1"
               },
               "safari_ios": "mirror",
               "samsunginternet_android": "mirror",