diff --git a/docs/src/errors.rst b/docs/src/errors.rst
index 25d0efaf0..c7240f354 100644
--- a/docs/src/errors.rst
+++ b/docs/src/errors.rst
@@ -335,6 +335,10 @@ Error constants
 
     illegal byte sequence
 
+.. c:macro:: UV_ESOCKTNOSUPPORT
+
+    socket type not supported
+
 
 API
 ---
diff --git a/include/uv.h b/include/uv.h
index d2bdcc9cf..7524ff95a 100644
--- a/include/uv.h
+++ b/include/uv.h
@@ -149,6 +149,7 @@ extern "C" {
   XX(ENOTTY, "inappropriate ioctl for device")                                \
   XX(EFTYPE, "inappropriate file type or format")                             \
   XX(EILSEQ, "illegal byte sequence")                                         \
+  XX(ESOCKTNOSUPPORT, "socket type not supported")                            \
 
 #define UV_HANDLE_TYPE_MAP(XX)                                                \
   XX(ASYNC, async)                                                            \
diff --git a/include/uv/errno.h b/include/uv/errno.h
index a0ca571b0..71906b3f5 100644
--- a/include/uv/errno.h
+++ b/include/uv/errno.h
@@ -451,4 +451,10 @@
 # define UV__EOVERFLOW (-4026)
 #endif
 
+#if defined(ESOCKTNOSUPPORT) && !defined(_WIN32)
+# define UV__ESOCKTNOSUPPORT UV__ERR(ESOCKTNOSUPPORT)
+#else
+# define UV__ESOCKTNOSUPPORT (-4025)
+#endif
+
 #endif /* UV_ERRNO_H_ */
diff --git a/src/win/error.c b/src/win/error.c
index 3ec984c83..3a269da87 100644
--- a/src/win/error.c
+++ b/src/win/error.c
@@ -105,7 +105,6 @@ int uv_translate_sys_error(int sys_errno) {
     case ERROR_SYMLINK_NOT_SUPPORTED:       return UV_EINVAL;
     case WSAEINVAL:                         return UV_EINVAL;
     case WSAEPFNOSUPPORT:                   return UV_EINVAL;
-    case WSAESOCKTNOSUPPORT:                return UV_EINVAL;
     case ERROR_BEGINNING_OF_MEDIA:          return UV_EIO;
     case ERROR_BUS_RESET:                   return UV_EIO;
     case ERROR_CRC:                         return UV_EIO;
@@ -168,6 +167,7 @@ int uv_translate_sys_error(int sys_errno) {
     case ERROR_NOT_SAME_DEVICE:             return UV_EXDEV;
     case ERROR_INVALID_FUNCTION:            return UV_EISDIR;
     case ERROR_META_EXPANSION_TOO_LONG:     return UV_E2BIG;
+    case WSAESOCKTNOSUPPORT:                return UV_ESOCKTNOSUPPORT;
     default:                                return UV_UNKNOWN;
   }
 }