diff --git a/test/Reconstruction_Test.cpp b/test/Reconstruction_Test.cpp
index c891cd9..eb4ba67 100644
--- a/test/Reconstruction_Test.cpp
+++ b/test/Reconstruction_Test.cpp
@@ -382,5 +382,6 @@ TEST_F(Reconstruction_Test,callTval3){
     auto result = Recon::callTval3(M, b, dims, 0,opt);
     auto outSOS = Recon::slownessToSOS(result, 1.498206569328594e+03) ;
     MatlabWriter w2("/home/krad/transmissionSOS111.mat");
-    w2.write(outSOS, "SOS");
+    w2.setMatrix(outSOS, "SOS");
+    w2.write();
 }