diff --git a/Eigen/src/Sparse/DynamicSparseMatrix.h b/Eigen/src/Sparse/DynamicSparseMatrix.h
index 710b978fe..99715d031 100644
--- a/Eigen/src/Sparse/DynamicSparseMatrix.h
+++ b/Eigen/src/Sparse/DynamicSparseMatrix.h
@@ -279,18 +279,6 @@ class DynamicSparseMatrix
       return *this;
     }
 
-    template<typename OtherDerived>
-    inline DynamicSparseMatrix& operator=(const SparseMatrixBase<OtherDerived>& other)
-    {
-      return SparseMatrixBase<DynamicSparseMatrix>::operator=(other.derived());
-    }
-    
-    template<typename OtherDerived>
-    EIGEN_STRONG_INLINE DynamicSparseMatrix& operator=(const ReturnByValue<OtherDerived>& func)
-    {
-      return Base::operator=(func);
-    }
-
     /** Destructor */
     inline ~DynamicSparseMatrix() {}
 
diff --git a/Eigen/src/Sparse/SparseMatrix.h b/Eigen/src/Sparse/SparseMatrix.h
index 73ca5945b..190979b44 100644
--- a/Eigen/src/Sparse/SparseMatrix.h
+++ b/Eigen/src/Sparse/SparseMatrix.h
@@ -85,7 +85,7 @@ class SparseMatrix
 {
   public:
     EIGEN_SPARSE_PUBLIC_INTERFACE(SparseMatrix)
-    using Base::operator=;
+//     using Base::operator=;
     EIGEN_SPARSE_INHERIT_ASSIGNMENT_OPERATOR(SparseMatrix, +=)
     EIGEN_SPARSE_INHERIT_ASSIGNMENT_OPERATOR(SparseMatrix, -=)
     // FIXME: why are these operator already alvailable ???
@@ -466,15 +466,15 @@ class SparseMatrix
     #ifndef EIGEN_PARSED_BY_DOXYGEN
     template<typename Lhs, typename Rhs>
     inline SparseMatrix& operator=(const SparseSparseProduct<Lhs,Rhs>& product)
-    {
-      return Base::operator=(product);
-    }
+    { return Base::operator=(product); }
     
     template<typename OtherDerived>
-    EIGEN_STRONG_INLINE SparseMatrix& operator=(const ReturnByValue<OtherDerived>& func)
-    {
-      return Base::operator=(func);
-    }
+    inline SparseMatrix& operator=(const ReturnByValue<OtherDerived>& other)
+    { return Base::operator=(other); }
+    
+    template<typename OtherDerived>
+    inline SparseMatrix& operator=(const EigenBase<OtherDerived>& other)
+    { return Base::operator=(other); }
     #endif
 
     template<typename OtherDerived>