diff --git a/Eigen/src/Sparse/SuperLUSupport.h b/Eigen/src/Sparse/SuperLUSupport.h
index bbe9ef9ac8..3c9a4fcced 100644
--- a/Eigen/src/Sparse/SuperLUSupport.h
+++ b/Eigen/src/Sparse/SuperLUSupport.h
@@ -60,7 +60,10 @@ struct SluMatrixMapHelper;
   */
 struct SluMatrix : SuperMatrix
 {
-  SluMatrix() {}
+  SluMatrix()
+  {
+    Store = &storage;
+  }
 
   SluMatrix(const SluMatrix& other)
     : SuperMatrix(other)
@@ -68,6 +71,14 @@ struct SluMatrix : SuperMatrix
     Store = &storage;
     storage = other.storage;
   }
+  
+  SluMatrix& operator=(const SluMatrix& other)
+  {
+    SuperMatrix::operator=(static_cast<const SuperMatrix&>(other));
+    Store = &storage;
+    storage = other.storage;
+    return *this;
+  }
 
   struct
   {