diff --git a/Numeric/FuncSpaceData.h b/Numeric/FuncSpaceData.h
index e940ee84731f9c4e803b5c8d622e2c0923e51d19..0ddc82b5652bc417943fdabd6f4f5e6877861d08 100644
--- a/Numeric/FuncSpaceData.h
+++ b/Numeric/FuncSpaceData.h
@@ -18,8 +18,8 @@ class FuncSpaceData
   // bezier and metric bases.
 
 private:
-  const int _tag, _spaceOrder, _nij, _nk;
-  const bool _pyramidalSpace, _serendipity;
+  int _tag, _spaceOrder, _nij, _nk;
+  bool _pyramidalSpace, _serendipity;
   // When '_parentType' == TYPE_PYR,
   // if _pyramidalSpace == true, then the space is {X^i Y^j Z^k | i,j <= k+'_nij', k <= '_nk'},
   // otherwise, the space is {X^i Y^j Z^k | i,j <= '_nij', k <= '_nk'},