diff --git a/src/dict/stardict.cc b/src/dict/stardict.cc
index a9d9be7b3..cd2e62258 100644
--- a/src/dict/stardict.cc
+++ b/src/dict/stardict.cc
@@ -1660,7 +1660,7 @@ static void handleIdxSynFile( string const & fileName,
     }
 
     if ( rd != 65536 ) {
-      image.resize( oldSize + rd + 1 );
+      image.resize( oldSize + rd );
       break;
     }
   }