diff --git a/browser/components/readinglist/SQLiteStore.jsm b/browser/components/readinglist/SQLiteStore.jsm
index aefc8361b1b..8777aa9ee72 100644
--- a/browser/components/readinglist/SQLiteStore.jsm
+++ b/browser/components/readinglist/SQLiteStore.jsm
@@ -126,11 +126,16 @@ this.SQLiteStore.prototype = {
   /**
    * Call this when you're done with the store.  Don't use it afterward.
    */
-  destroy: Task.async(function* () {
-    let conn = yield this._connectionPromise;
-    yield conn.close();
-    this._connectionPromise = Promise.reject("Store destroyed");
-  }),
+  destroy() {
+    if (!this._destroyPromise) {
+      this._destroyPromise = Task.spawn(function* () {
+        let conn = yield this._connectionPromise;
+        yield conn.close();
+        this._connectionPromise = Promise.reject("Store destroyed");
+      }.bind(this));
+    }
+    return this._destroyPromise;
+  },
 
   /**
    * Creates the database connection if it hasn't been created already.
diff --git a/browser/components/readinglist/test/xpcshell/test_ReadingList.js b/browser/components/readinglist/test/xpcshell/test_ReadingList.js
index 092cee719e9..00bc3a04b5a 100644
--- a/browser/components/readinglist/test/xpcshell/test_ReadingList.js
+++ b/browser/components/readinglist/test/xpcshell/test_ReadingList.js
@@ -21,7 +21,9 @@ add_task(function* prepare() {
   gList = ReadingList;
   Assert.ok(gList);
   gDBFile.append(gList._store.pathRelativeToProfileDir);
-  do_register_cleanup(() => {
+  do_register_cleanup(function* () {
+    // Wait for the list's store to close its connection to the database.
+    yield gList.destroy();
     if (gDBFile.exists()) {
       gDBFile.remove(true);
     }
diff --git a/browser/components/readinglist/test/xpcshell/test_SQLiteStore.js b/browser/components/readinglist/test/xpcshell/test_SQLiteStore.js
index 998eba6428d..0a39085f9d2 100644
--- a/browser/components/readinglist/test/xpcshell/test_SQLiteStore.js
+++ b/browser/components/readinglist/test/xpcshell/test_SQLiteStore.js
@@ -23,7 +23,11 @@ add_task(function* prepare() {
     }
   }
   removeDB();
-  do_register_cleanup(removeDB);
+  do_register_cleanup(function* () {
+    // Wait for the store to close its connection to the database.
+    yield gStore.destroy();
+    removeDB();
+  });
 
   gStore = new SQLiteStore(dbFile.path);
 
diff --git a/browser/components/readinglist/test/xpcshell/xpcshell.ini b/browser/components/readinglist/test/xpcshell/xpcshell.ini
index c172cf0acf0..f89f63d8999 100644
--- a/browser/components/readinglist/test/xpcshell/xpcshell.ini
+++ b/browser/components/readinglist/test/xpcshell/xpcshell.ini
@@ -2,6 +2,6 @@
 head = head.js
 firefox-appdir = browser
 
-;[test_ReadingList.js]
+[test_ReadingList.js]
 [test_scheduler.js]
-;[test_SQLiteStore.js]
+[test_SQLiteStore.js]