diff --git a/examples/example/tests/test-includes/a.js b/examples/example/tests/test-includes/a.js
new file mode 100644
index 0000000000..1d99a08525
--- /dev/null
+++ b/examples/example/tests/test-includes/a.js
@@ -0,0 +1,7 @@
+// a.js:
+Script.include('b.js');
+if (a === undefined) {
+a = 0;
+}
+a++;
+print('script a:' + a);
diff --git a/examples/example/tests/test-includes/b.js b/examples/example/tests/test-includes/b.js
new file mode 100644
index 0000000000..ea3f9664ba
--- /dev/null
+++ b/examples/example/tests/test-includes/b.js
@@ -0,0 +1,6 @@
+// b.js:
+if (b === undefined) {
+b = 0;
+}
+b++;
+print('script b: ' + b);
\ No newline at end of file
diff --git a/examples/example/tests/test-includes/start.js b/examples/example/tests/test-includes/start.js
new file mode 100644
index 0000000000..8060ffcf71
--- /dev/null
+++ b/examples/example/tests/test-includes/start.js
@@ -0,0 +1,5 @@
+// start.js:
+var a, b;
+print('initially: a:' + a + ' b:' + b);
+Script.include(['a.js', '../test-includes/a.js', 'b.js', 'a.js']);
+print('finally a:' + a + ' b:' + b);
diff --git a/libraries/script-engine/src/ScriptEngine.cpp b/libraries/script-engine/src/ScriptEngine.cpp
index a460a1189d..83a87b718f 100644
--- a/libraries/script-engine/src/ScriptEngine.cpp
+++ b/libraries/script-engine/src/ScriptEngine.cpp
@@ -863,7 +863,9 @@ void ScriptEngine::include(const QStringList& includeFiles, QScriptValue callbac
         QUrl thisURL { resolvePath(file) };
         if (!_includedURLs.contains(thisURL)) {
             urls.append(thisURL);
-        } else {
+            _includedURLs << thisURL;
+        }
+        else {
             qCDebug(scriptengine) << "Script.include() ignoring previously included url:" << thisURL;
         }
     }
@@ -876,7 +878,6 @@ void ScriptEngine::include(const QStringList& includeFiles, QScriptValue callbac
             if (contents.isNull()) {
                 qCDebug(scriptengine) << "Error loading file: " << url << "line:" << __LINE__;
             } else {
-                _includedURLs << url;
                 QScriptValue result = evaluate(contents, url.toString());
             }
         }