diff --git a/src/fourier/details/healpix_transform.hpp b/src/fourier/details/healpix_transform.hpp
index d3f7927..b269471 100644
--- a/src/fourier/details/healpix_transform.hpp
+++ b/src/fourier/details/healpix_transform.hpp
@@ -67,7 +67,7 @@ namespace CosmoTool
       sharp_make_triangular_alm_info (Lmax, Mmax, 1, &ainfo);
     }
 
-    HealpixFourierTransform(long nSide, long Lmax, long Mmax, int iterate = 0, const std::valarray<double>& weights )
+    HealpixFourierTransform(long nSide, long Lmax, long Mmax, const std::valarray<double>& weights, int iterate = 0 )
       : realMap(nSide), fourierMap(Lmax, Mmax), ainfo(0), ginfo(0), m_iterate(iterate)
     {
       sharp_make_weighted_healpix_geom_info (nSide, 1, &weights[0], &ginfo);