diff --git a/src/fsfw_hal/linux/uio/UioMapper.cpp b/src/fsfw_hal/linux/uio/UioMapper.cpp
index 33e4fd97..c6da5488 100644
--- a/src/fsfw_hal/linux/uio/UioMapper.cpp
+++ b/src/fsfw_hal/linux/uio/UioMapper.cpp
@@ -36,7 +36,7 @@ UioMapper::~UioMapper() {}
 
 ReturnValue_t UioMapper::getMappedAdress(uint32_t** address, Permissions permissions) {
   ReturnValue_t result = returnvalue::OK;
-  int fd = open(uioFile.c_str(), O_RDWR);
+  int fd = open(uioFile.c_str(), O_RDWR | O_SYNC);
   if (fd < 1) {
 #if FSFW_CPP_OSTREAM_ENABLED == 1
     sif::error << "UioMapper::getMappedAdress: Invalid UIO device file " << uioFile << std::endl;