diff --git a/toolkit/components/osfile/osfile_win_front.jsm b/toolkit/components/osfile/osfile_win_front.jsm
index e6dc4f7c2382..da7ec7b77f3c 100644
--- a/toolkit/components/osfile/osfile_win_front.jsm
+++ b/toolkit/components/osfile/osfile_win_front.jsm
@@ -581,30 +581,30 @@
         * The creation time of this file.
         * @type {Date}
         */
-       get winCreationTime() {
+       get winCreationDate() {
          let date = FILETIME_to_Date(this._ftCreationTime);
-         delete this.winCreationTime;
-         Object.defineProperty(this, "winCreationTime", {value: date});
+         delete this.winCreationDate;
+         Object.defineProperty(this, "winCreationDate", {value: date});
          return date;
        },
        /**
         * The last modification time of this file.
         * @type {Date}
         */
-       get winLastWriteTime() {
+       get winLastWriteDate() {
          let date = FILETIME_to_Date(this._ftLastWriteTime);
-         delete this.winLastWriteTime;
-         Object.defineProperty(this, "winLastWriteTime", {value: date});
+         delete this.winLastWriteDate;
+         Object.defineProperty(this, "winLastWriteDate", {value: date});
          return date;
        },
        /**
         * The last access time of this file.
         * @type {Date}
         */
-       get winLastAccessTime() {
+       get winLastAccessDate() {
          let date = FILETIME_to_Date(this._ftLastAccessTime);
-         delete this.winLastAccessTime;
-         Object.defineProperty(this, "winLastAccessTime", {value: date});
+         delete this.winLastAccessDate;
+         Object.defineProperty(this, "winLastAccessDate", {value: date});
          return date;
        },
        /**
diff --git a/toolkit/components/osfile/tests/mochi/worker_test_osfile_front.js b/toolkit/components/osfile/tests/mochi/worker_test_osfile_front.js
index d8df0533d385..dd5128460056 100644
--- a/toolkit/components/osfile/tests/mochi/worker_test_osfile_front.js
+++ b/toolkit/components/osfile/tests/mochi/worker_test_osfile_front.js
@@ -327,15 +327,15 @@ function test_iter_dir()
 
     if (OS.Win) {
       let year = new Date().getFullYear();
-      let creation = entry.winCreationTime;
+      let creation = entry.winCreationDate;
       ok(creation, "test_iter_dir: Windows creation date exists: " + creation);
       ok(creation.getFullYear() >= year -  1 && creation.getFullYear() <= year, "test_iter_dir: consistent creation date");
 
-      let lastWrite = entry.winLastWriteTime;
+      let lastWrite = entry.winLastWriteDate;
       ok(lastWrite, "test_iter_dir: Windows lastWrite date exists: " + lastWrite);
       ok(lastWrite.getFullYear() >= year - 1 && lastWrite.getFullYear() <= year, "test_iter_dir: consistent lastWrite date");
 
-      let lastAccess = entry.winLastAccessTime;
+      let lastAccess = entry.winLastAccessDate;
       ok(lastAccess, "test_iter_dir: Windows lastAccess date exists: " + lastAccess);
       ok(lastAccess.getFullYear() >= year - 1 && lastAccess.getFullYear() <= year, "test_iter_dir: consistent lastAccess date");
     }