diff --git a/cli/tests/unit/os_test.ts b/cli/tests/unit/os_test.ts
index a8cc55e879..e244948541 100644
--- a/cli/tests/unit/os_test.ts
+++ b/cli/tests/unit/os_test.ts
@@ -158,10 +158,12 @@ Deno.test({ permissions: { env: true } }, function envInvalidChars() {
 });
 
 Deno.test(function osPid() {
+  assertEquals(typeof Deno.pid, "number");
   assert(Deno.pid > 0);
 });
 
 Deno.test(function osPpid() {
+  assertEquals(typeof Deno.ppid, "number");
   assert(Deno.ppid > 0);
 });
 
diff --git a/runtime/ops/runtime.rs b/runtime/ops/runtime.rs
index 3f00142cb4..5b0b092c19 100644
--- a/runtime/ops/runtime.rs
+++ b/runtime/ops/runtime.rs
@@ -32,7 +32,7 @@ fn op_main_module(state: &mut OpState) -> Result<String, AnyError> {
 /// This is an op instead of being done at initialization time because
 /// it's expensive to retrieve the ppid on Windows.
 #[op2(fast)]
-#[bigint]
+#[number]
 pub fn op_ppid() -> i64 {
   #[cfg(windows)]
   {