diff --git a/src/MatrixBase.h b/src/MatrixBase.h
index 93552b467..7c817bda3 100644
--- a/src/MatrixBase.h
+++ b/src/MatrixBase.h
@@ -308,6 +308,18 @@ template<typename Derived> class MatrixAlias
       ref().xpr() = xpr;
     }
     
+    template<typename XprContent> 
+    void operator+=(const MatrixConstXpr<XprContent> &xpr)
+    {
+      ref().xpr() += xpr;
+    }
+    
+    template<typename XprContent> 
+    void operator-=(const MatrixConstXpr<XprContent> &xpr)
+    {
+      ref().xpr() -= xpr;
+    }
+    
   protected:
     MatrixRef<MatrixBase<Derived> > m_ref;
     Derived m_tmp;
diff --git a/test/vectorops.cpp b/test/vectorops.cpp
index 3aadb73c6..de0f03e6f 100644
--- a/test/vectorops.cpp
+++ b/test/vectorops.cpp
@@ -48,6 +48,7 @@ template<typename VectorType> void vectorOps(const VectorType& v)
   a += b + b;
   a.xpr() -= b;
   a.xpr() -= b + b;
+  a.alias() += a + a;
 }
 
 void EigenTest::testVectorOps()