diff --git a/libs/libc/stdlib/lib_openpty.c b/libs/libc/stdlib/lib_openpty.c
index 9b8e9bfe454..747e010ab34 100644
--- a/libs/libc/stdlib/lib_openpty.c
+++ b/libs/libc/stdlib/lib_openpty.c
@@ -68,7 +68,7 @@
 int posix_openpt(int oflag)
 {
 #ifdef CONFIG_PSEUDOTERM_SUSV1
-  return open("dev/ptmx", oflag);
+  return open("/dev/ptmx", oflag);
 #else
   int minor;