diff --git a/hwpfilter/source/hwpread.cxx b/hwpfilter/source/hwpread.cxx
index a1c1c145d0ac..a4f159525e17 100644
--- a/hwpfilter/source/hwpread.cxx
+++ b/hwpfilter/source/hwpread.cxx
@@ -527,13 +527,13 @@ bool Line::Read(HWPFile & hwpf)
     return !hwpf.State();
 }
 
-
 // hidden(15)
-Hidden::Hidden():HBox(CH_HIDDEN)
+Hidden::Hidden()
+    : HBox(CH_HIDDEN)
+    , dummy(0)
 {
 }
 
-
 bool Hidden::Read(HWPFile & hwpf)
 {
     hwpf.Read2b(reserved, 2);