diff --git a/src/path.ts b/src/path.ts
index 591f70e..eea9a71 100644
--- a/src/path.ts
+++ b/src/path.ts
@@ -16,11 +16,19 @@ const _DRIVE_LETTER_RE = /^[A-Za-z]:$/;
 const _ROOT_FOLDER_RE = /^\/([A-Za-z]:)?$/;
 const _EXTNAME_RE = /.(\.[^./]+)$/;
 
-// Force POSIX constants
-
-export const sep: typeof path.sep = "/";
+/**
+ * Constant for path separator.
+ *
+ * Always equals to `"/"`.
+ */
+export const sep = "/";
 
-export const delimiter: typeof path.delimiter = ":";
+/**
+ * The platform-specific file delimiter.
+ *
+ * Equals to `";"` in windows and `":"` in all other platforms.
+ */
+export const delimiter = globalThis.process?.platform === "win32" ? ";" : ":";
 
 export const normalize: typeof path.normalize = function (path: string) {
   if (path.length === 0) {
diff --git a/test/index.spec.ts b/test/index.spec.ts
index b520425..8a52089 100644
--- a/test/index.spec.ts
+++ b/test/index.spec.ts
@@ -365,8 +365,10 @@ runTest("toNamespacedPath", toNamespacedPath, {
 });
 
 describe("constants", () => {
-  it("delimiter should equal :", () => {
-    expect(delimiter).to.equal(":");
+  it("delimiter", () => {
+    expect(delimiter).to.equal(
+      globalThis.process?.platform === "win32" ? ";" : ":",
+    );
   });
 
   it("sep should equal /", () => {