diff --git a/src/core/io.c b/src/core/io.c
index fc984d29..97b205e3 100644
--- a/src/core/io.c
+++ b/src/core/io.c
@@ -33,7 +33,6 @@
 #include <fcntl.h>
 #include <sys/wait.h>
 #include <unistd.h>
-#include <fcntl.h>
 #endif
 
 static int cfun_io_gc(void *p, size_t len);
@@ -143,10 +142,9 @@ static Janet cfun_io_temp(int32_t argc, Janet *argv) {
 
 #ifndef JANET_WINDOWS
     /* It seems highly unlikely a typical janet user wants a tempfile to be inherited and
-       libc tmpfile does NOT set O_CLOEXEC by default,
+       libc tmpfile does NOT set O_CLOEXEC by default.
 
-       Even though setting this flag after a delay is racy in threaded programs,
-       It helps in single threaded ones. The fix for threaded programs would be to use mkostemp
+       For threaded programs we should use mkostemp
        which is coming to POSIX at a later time. */
     if (fcntl(fileno(tmp), F_SETFD, FD_CLOEXEC) != 0) {
         fclose(tmp);