diff --git a/Source/lsmrBase.cxx b/Source/lsmrBase.cxx
index 6306d8c..88758c8 100755
--- a/Source/lsmrBase.cxx
+++ b/Source/lsmrBase.cxx
@@ -321,6 +321,8 @@ Solve( unsigned int m, unsigned int n, const double * b, double * x )
   std::copy( b, b+m, u );
   std::fill( v, v+n, zero);
   std::fill( w, v+n, zero);
+  std::fill( x, x+n, zero);
+  
   this->Scale( m, (-1.0), u );
   this->Aprod1( m, n, x, u );
   this->Scale( m, (-1.0), u );