diff --git a/src/html/winpars.cpp b/src/html/winpars.cpp
index 83a06fc123..4187a54dfe 100644
--- a/src/html/winpars.cpp
+++ b/src/html/winpars.cpp
@@ -338,10 +338,11 @@ wxFSFile *wxHtmlWinParser::OpenURL(wxHtmlURLType type,
     return GetFS()->OpenFile(myurl, flags);
 }
 
-#define NBSP_UNICODE_VALUE  (wxChar(160))
 #if !wxUSE_UNICODE
+    #define NBSP_UNICODE_VALUE  (160U)
     #define CUR_NBSP_VALUE m_nbsp
 #else
+    #define NBSP_UNICODE_VALUE  (wxChar(160))
     #define CUR_NBSP_VALUE NBSP_UNICODE_VALUE
 #endif