1 files changed, 2 insertions, 0 deletions
diff --git a/src/fs.cpp b/src/fs.cpp
index 3c8f4c0247..f937f64e04 100644
--- a/src/fs.cpp
+++ b/src/fs.cpp
@@ -160,6 +160,7 @@ static std::string openmodeToStr(std::ios_base::openmode mode)
 void ifstream::open(const fs::path& p, std::ios_base::openmode mode)
 {
     close();
+    mode |= std::ios_base::in;
     m_file = fsbridge::fopen(p, openmodeToStr(mode).c_str());
     if (m_file == nullptr) {
         return;
@@ -183,6 +184,7 @@ void ifstream::close()
 void ofstream::open(const fs::path& p, std::ios_base::openmode mode)
 {
     close();
+    mode |= std::ios_base::out;
     m_file = fsbridge::fopen(p, openmodeToStr(mode).c_str());
     if (m_file == nullptr) {
         return;