diff --git a/inputfiles/patches/intersection-observer.kdl b/inputfiles/patches/intersection-observer.kdl
new file mode 100644
index 000000000..8bba2a34b
--- /dev/null
+++ b/inputfiles/patches/intersection-observer.kdl
@@ -0,0 +1,6 @@
+removals {
+  dictionary IntersectionObserverInit {
+    member delay           // Blink only as of 2025-12
+    member trackVisibility // Blink only as of 2025-12
+  }
+}
diff --git a/inputfiles/removedTypes.jsonc b/inputfiles/removedTypes.jsonc
index f311f563d..bb07fb868 100644
--- a/inputfiles/removedTypes.jsonc
+++ b/inputfiles/removedTypes.jsonc
@@ -111,14 +111,6 @@
     },
     "dictionaries": {
         "dictionary": {
-            "IntersectionObserverInit": {
-                "members": {
-                    "member": {
-                        "delay": null, // Blink only as of 2024-07
-                        "trackVisibility": null // Blink only as of 2024-07
-                    }
-                }
-            },
             "MediaCapabilitiesDecodingInfo": {
                 "members": {
                     "member": {