diff --git a/libc/stdlib/atexit.c b/libc/stdlib/atexit.c
index bd6ac3d..692e0c0 100644
--- a/libc/stdlib/atexit.c
+++ b/libc/stdlib/atexit.c
@@ -186,7 +186,10 @@
 	}
 	_ATEXIT_UNLOCK();
 
-  fflush(NULL);
+	/* If called via exit(), flush output of all open files. */
+	if (dso == NULL) {
+		fflush(NULL);
+	}
 
   /* BEGIN android-changed: call __unregister_atfork if dso is not null */
   if (dso != NULL) {