diff --git a/cli/tsc/dts/lib.deno.ns.d.ts b/cli/tsc/dts/lib.deno.ns.d.ts
index 2386cf10f5..7bf76bb013 100644
--- a/cli/tsc/dts/lib.deno.ns.d.ts
+++ b/cli/tsc/dts/lib.deno.ns.d.ts
@@ -4389,7 +4389,7 @@ declare namespace Deno {
     success: boolean;
     /** The exit code of the child process. */
     code: number;
-    /** The signal associated with the child process. */
+    /** The signal associated with the child process. This field is `null` on Windows. */
     signal: Signal | null;
   }