diff --git a/components/newlib/newlib/port/syscall.c b/components/newlib/newlib/port/syscall.c
index 60f8d5db..c82fc6c9 100644
--- a/components/newlib/newlib/port/syscall.c
+++ b/components/newlib/newlib/port/syscall.c
@@ -17,6 +17,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <sys/errno.h>
 
 #include "esp_libc.h"
 #include "FreeRTOS.h"
@@ -177,3 +178,9 @@ void *_sbrk_r(struct _reent *r, ptrdiff_t incr)
 {
     abort();
 }
+
+int _getpid_r(struct _reent *r)
+{
+    __errno_r(r) = ENOSYS;
+    return -1;
+}