diff --git a/frappe/monitor.py b/frappe/monitor.py
index 55512a8abd..a02704f9e0 100644
--- a/frappe/monitor.py
+++ b/frappe/monitor.py
@@ -127,7 +127,7 @@ def flush():
 		logs = frappe.cache.lrange(MONITOR_REDIS_KEY, 0, -1)
 		if logs:
 			logs = list(map(frappe.safe_decode, logs))
-			with open(log_file(), "a", os.O_NONBLOCK) as f:
+			with open(log_file(), "a") as f:
 				f.write("\n".join(logs))
 				f.write("\n")
 			# Remove fetched entries from cache