diff --git a/src/unix/error.c b/src/unix/error.c
index e7d7c1ff..78cc09be 100644
--- a/src/unix/error.c
+++ b/src/unix/error.c
@@ -59,6 +59,7 @@ void uv_fatal_error(const int errorno, const char* syscall) {
 static int uv__translate_lib_error(int code) {
   switch (code) {
     case UV_ENOSYS: return ENOSYS;
+    case UV_ENOTSOCK: return ENOTSOCK;
     case UV_ENOENT: return ENOENT;
     case UV_EACCESS: return EACCES;
     case UV_EAFNOSUPPORT: return EAFNOSUPPORT;
@@ -89,6 +90,7 @@ uv_err_code uv_translate_sys_error(int sys_errno) {
   switch (sys_errno) {
     case 0: return UV_OK;
     case ENOSYS: return UV_ENOSYS;
+    case ENOTSOCK: return UV_ENOTSOCK;
     case ENOENT: return UV_ENOENT;
     case EACCES: return UV_EACCESS;
     case EAFNOSUPPORT: return UV_EAFNOSUPPORT;