3 files changed, 25 insertions, 1 deletions
diff --git a/api/logic/FileSystem.cpp b/api/logic/FileSystem.cpp
index 7805a78b..67bafd28 100644
--- a/api/logic/FileSystem.cpp
+++ b/api/logic/FileSystem.cpp
@@ -60,6 +60,25 @@ QByteArray read(const QString &filename)
 	return data;
 }
 
+bool updateTimestamp(const QString& filename)
+{
+	QFile file(filename);
+	if (!file.exists())
+	{
+		return false;
+	}
+	if (!file.open(QIODevice::ReadWrite))
+	{
+		return false;
+	}
+	const quint64 size = file.size();
+	file.seek(size);
+	file.write( QByteArray(1, '0') );
+	file.resize(size);
+	return true;
+
+}
+
 bool ensureFilePathExists(QString filenamepath)
 {
 	QFileInfo a(filenamepath);
diff --git a/api/logic/FileSystem.h b/api/logic/FileSystem.h
index 564f94f9..a09ee557 100644
--- a/api/logic/FileSystem.h
+++ b/api/logic/FileSystem.h
@@ -29,6 +29,11 @@ MULTIMC_LOGIC_EXPORT void write(const QString &filename, const QByteArray &data)
 MULTIMC_LOGIC_EXPORT QByteArray read(const QString &filename);
 
 /**
+ * Update the last changed timestamp of an existing file
+ */
+MULTIMC_LOGIC_EXPORT bool updateTimestamp(const QString & filename);
+
+/**
  * Creates all the folders in a path for the specified path
  * last segment of the path is treated as a file name and is ignored!
  */
diff --git a/api/logic/minecraft/ModList.cpp b/api/logic/minecraft/ModList.cpp
index 7396cd65..10a145b8 100644
--- a/api/logic/minecraft/ModList.cpp
+++ b/api/logic/minecraft/ModList.cpp
@@ -148,13 +148,13 @@ bool ModList::installMod(const QString &filename)
 		QString newpath = FS::PathCombine(m_dir.path(), fileinfo.fileName());
 		if (!QFile::copy(fileinfo.filePath(), newpath))
 			return false;
+		FS::updateTimestamp(newpath);
 		m.repath(newpath);
 		update();
 		return true;
 	}
 	else if (type == Mod::MOD_FOLDER)
 	{
-
 		QString from = fileinfo.filePath();
 		QString to = FS::PathCombine(m_dir.path(), fileinfo.fileName());
 		if (!FS::copy(from, to)())