diff --git a/example/cycle_ratio_example.cpp b/example/cycle_ratio_example.cpp
index b838a958..68846456 100644
--- a/example/cycle_ratio_example.cpp
+++ b/example/cycle_ratio_example.cpp
@@ -34,10 +34,10 @@ void gen_rand_graph(TG &g, size_t nV, size_t nE)
     rng.seed(uint32_t(time(0)));
     boost::generate_random_graph(g, nV, nE, rng, true, true);
     boost::uniform_real<> ur(-1,10);
-    boost::variate_generator<boost::mt19937&, boost::uniform_real<> >	ew1rg(rng, ur);
+    boost::variate_generator<boost::mt19937&, boost::uniform_real<> >   ew1rg(rng, ur);
     randomize_property<edge_weight_t>(g, ew1rg);
     boost::uniform_int<size_t> uint(1,5);
-    boost::variate_generator<boost::mt19937&, boost::uniform_int<size_t> >	ew2rg(rng, uint);
+    boost::variate_generator<boost::mt19937&, boost::uniform_int<size_t> >      ew2rg(rng, uint);
     randomize_property<edge_weight2_t>(g, ew2rg);
 }
 
diff --git a/include/boost/graph/compressed_sparse_row_graph.hpp b/include/boost/graph/compressed_sparse_row_graph.hpp
index 1ea2b655..cbc8cf91 100644
--- a/include/boost/graph/compressed_sparse_row_graph.hpp
+++ b/include/boost/graph/compressed_sparse_row_graph.hpp
@@ -1132,7 +1132,7 @@ class compressed_sparse_row_graph
   }
 
   template <typename BidirectionalIteratorOrig, typename EPIterOrig, 
-	    typename GlobalToLocal>
+            typename GlobalToLocal>
   void
   add_edges_sorted_internal_global(
       BidirectionalIteratorOrig first_sorted,
@@ -1368,7 +1368,7 @@ add_edge(Vertex src, Vertex tgt,
       const GlobalToLocal& global_to_local,
       BOOST_CSR_GRAPH_TYPE& g) {
     g.add_edges_sorted_internal_global(first_sorted, last_sorted, ep_iter_sorted, 
-				       global_to_local);
+                                       global_to_local);
   }
 
   // Add edges from a sorted (smallest sources first) range of pairs
@@ -1388,7 +1388,7 @@ add_edge(Vertex src, Vertex tgt,
             typename GlobalToLocal>
   inline void
   add_edges_global(InputIterator first, InputIterator last, 
-		   const GlobalToLocal& global_to_local, BOOST_CSR_GRAPH_TYPE& g) {
+                   const GlobalToLocal& global_to_local, BOOST_CSR_GRAPH_TYPE& g) {
     g.add_edges_internal(first, last, global_to_local);
   }