diff --git a/src/basic/fd-util.c b/src/basic/fd-util.c
index a4a5c6b3f6..284d029a30 100644
--- a/src/basic/fd-util.c
+++ b/src/basic/fd-util.c
@@ -192,9 +192,9 @@ int fd_cloexec(int fd, bool cloexec) {
 }
 
 void stdio_unset_cloexec(void) {
-        fd_cloexec(STDIN_FILENO, false);
-        fd_cloexec(STDOUT_FILENO, false);
-        fd_cloexec(STDERR_FILENO, false);
+        (void) fd_cloexec(STDIN_FILENO, false);
+        (void) fd_cloexec(STDOUT_FILENO, false);
+        (void) fd_cloexec(STDERR_FILENO, false);
 }
 
 _pure_ static bool fd_in_set(int fd, const int fdset[], unsigned n_fdset) {