diff --git a/src/pprint.c b/src/pprint.c
index 7d011e8..20900c7 100644
--- a/src/pprint.c
+++ b/src/pprint.c
@@ -1027,7 +1027,7 @@ static void PPrintText( TidyDocImpl* doc, uint mode, uint indent,
             ix = IncrWS( ix, end, indent, ixWS );
         }
         else if (( c == '&' ) && (TY_(HTMLVersion)(doc) == HT50) &&
-            (((ix + 1) == end) || ((ix + 1) < end) && (isspace(doc->lexer->lexbuf[ix+1]))) )
+            (((ix + 1) == end) || (((ix + 1) < end) && (isspace(doc->lexer->lexbuf[ix+1])))) )
         {
             /*\
              * Issue #207 - This is an unambiguous ampersand need not be 'quoted' in HTML5