diff --git a/Eigen/src/Sparse/SparseLU.h b/Eigen/src/Sparse/SparseLU.h
index 142592050..79fad062a 100644
--- a/Eigen/src/Sparse/SparseLU.h
+++ b/Eigen/src/Sparse/SparseLU.h
@@ -96,8 +96,8 @@ class SparseLU
 
     void setOrderingMethod(int m)
     {
-      ei_assert(m&~OrderingMask == 0 && m!=0 && "invalid ordering method");
-      m_flags = m_flags&~OrderingMask | m&OrderingMask;
+      ei_assert((m&~OrderingMask) == 0 && m!=0 && "invalid ordering method");
+      m_flags = (m_flags&~OrderingMask) | (m&OrderingMask);
     }
 
     int orderingMethod() const