diff --git a/app/project/project.cpp b/app/project/project.cpp
index cfaabb663..014489dd6 100644
--- a/app/project/project.cpp
+++ b/app/project/project.cpp
@@ -132,6 +132,11 @@ void Project::set_filename(const QString &s)
 {
   filename_ = s;
 
+#ifdef Q_OS_WINDOWS
+  // Prevents filenames
+  filename_.replace('/', '\\');
+#endif
+
   emit NameChanged();
 }