diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 62adadf56..c259fdf14 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -16086,6 +16086,7 @@ interface URLSearchParams {
 declare var URLSearchParams: {
     prototype: URLSearchParams;
     new(init?: string[][] | Record<string, string> | string | URLSearchParams): URLSearchParams;
+    new(init?: FormData): URLSearchParams;
     toString(): string;
 };
 
diff --git a/baselines/webworker.generated.d.ts b/baselines/webworker.generated.d.ts
index 3164c065f..11511f31f 100644
--- a/baselines/webworker.generated.d.ts
+++ b/baselines/webworker.generated.d.ts
@@ -3296,6 +3296,7 @@ interface URLSearchParams {
 declare var URLSearchParams: {
     prototype: URLSearchParams;
     new(init?: string[][] | Record<string, string> | string | URLSearchParams): URLSearchParams;
+    new(init?: FormData): URLSearchParams;
     toString(): string;
 };
 
diff --git a/inputfiles/overridingTypes.json b/inputfiles/overridingTypes.json
index 163f60330..8a7b7f364 100644
--- a/inputfiles/overridingTypes.json
+++ b/inputfiles/overridingTypes.json
@@ -1705,6 +1705,14 @@
                     ]
                 }
             },
+            "URLSearchParams": {
+                "name": "URLSearchParams",
+                "constructor": {
+                    "override-signatures": [
+                        "new(init?: FormData): URLSearchParams"
+                    ]
+                }
+            },
             "EventTarget": {
                 "name": "EventTarget",
                 "override-exposed": "Window Worker",