diff --git a/Eigen/src/Core/products/GeneralMatrixMatrix.h b/Eigen/src/Core/products/GeneralMatrixMatrix.h
index 649bd3f96..cfd2f0095 100644
--- a/Eigen/src/Core/products/GeneralMatrixMatrix.h
+++ b/Eigen/src/Core/products/GeneralMatrixMatrix.h
@@ -401,7 +401,7 @@ class GeneralProduct<Lhs, Rhs, GemmProduct>
     template<typename Dest> void scaleAndAddTo(Dest& dst, const Scalar& alpha) const
     {
       eigen_assert(dst.rows()==m_lhs.rows() && dst.cols()==m_rhs.cols());
-      if(a_lhs.cols()==0 || a_lhs.rows()==0 || a_rhs.cols()==0)
+      if(m_lhs.cols()==0 || m_lhs.rows()==0 || m_rhs.cols()==0)
         return;
 
       typename internal::add_const_on_value_type<ActualLhsType>::type lhs = LhsBlasTraits::extract(m_lhs);