diff --git a/src/functions/BackupFunction.cpp b/src/functions/BackupFunction.cpp
index c71edd6..4e9d075 100644
--- a/src/functions/BackupFunction.cpp
+++ b/src/functions/BackupFunction.cpp
@@ -68,7 +68,7 @@ RUN_ASYNC(const std::string &partitionName, const std::string &outputName,
             false};
 
   const int ffd = Helper::openAndAddToCloseList(
-      outputName, collector, O_WRONLY | O_CREAT | O_TRUNC);
+      outputName, collector, O_WRONLY | O_CREAT | O_TRUNC, 0644);
   if (ffd < 0)
     return {format("Can't create/open output file %s: %s", outputName.data(),
                    strerror(errno)),