diff --git a/os-posix.c b/os-posix.c
index 0f59566639..a2ba50d23f 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -129,7 +129,7 @@ void os_set_proc_name(const char *s)
         exit(1);
     }
 #else
-    fprintf(stderr, "Change of process name not supported by your OS\n");
+    error_report("Change of process name not supported by your OS");
     exit(1);
 #endif
 }
@@ -243,7 +243,7 @@ static void change_root(void)
 {
     if (chroot_dir) {
         if (chroot(chroot_dir) < 0) {
-            fprintf(stderr, "chroot failed\n");
+            error_report("chroot failed");
             exit(1);
         }
         if (chdir("/")) {