diff --git a/minzip/Zip.c b/minzip/Zip.c
index 9f550f8..d557daa 100644
--- a/minzip/Zip.c
+++ b/minzip/Zip.c
@@ -968,7 +968,7 @@
                 setfscreatecon(secontext);
             }
 
-            int fd = open(targetFile, O_CREAT|O_WRONLY|O_TRUNC|O_SYNC,
+            int fd = open(targetFile, O_CREAT|O_WRONLY|O_TRUNC,
                 UNZIP_FILEMODE);
 
             if (secontext) {
diff --git a/updater/install.cpp b/updater/install.cpp
index 4f52684..bab2fe1 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -559,7 +559,7 @@
         }
 
         {
-            int fd = TEMP_FAILURE_RETRY(ota_open(dest_path, O_WRONLY | O_CREAT | O_TRUNC | O_SYNC,
+            int fd = TEMP_FAILURE_RETRY(ota_open(dest_path, O_WRONLY | O_CREAT | O_TRUNC,
                   S_IRUSR | S_IWUSR));
             if (fd == -1) {
                 printf("%s: can't open %s for write: %s\n", name, dest_path, strerror(errno));