diff --git a/lingucomponent/source/spellcheck/hunspell/phonet.cxx b/lingucomponent/source/spellcheck/hunspell/phonet.cxx
index f5b02f612692..ee14606d7541 100644
--- a/lingucomponent/source/spellcheck/hunspell/phonet.cxx
+++ b/lingucomponent/source/spellcheck/hunspell/phonet.cxx
@@ -34,6 +34,7 @@
 #include <cstring>
 #include <cstdio>
 #include <cctype>
+using namespace std;
 #else
 #include <stdlib.h>
 #include <string.h>