diff --git a/doc/examples/plot_rag_boundary.py b/doc/examples/plot_rag_boundary.py
index c975f884..5063d96a 100644
--- a/doc/examples/plot_rag_boundary.py
+++ b/doc/examples/plot_rag_boundary.py
@@ -8,8 +8,6 @@ This example demonstrates construction of region boundary based RAGs with the
 """
 from skimage.future import graph
 from skimage import data, segmentation, color, filters, io
-from matplotlib import colors
-import numpy as np
 
 img = data.coffee()
 gimg = color.rgb2gray(img)
diff --git a/skimage/future/graph/__init__.py b/skimage/future/graph/__init__.py
index e73c8d19..d685a793 100644
--- a/skimage/future/graph/__init__.py
+++ b/skimage/future/graph/__init__.py
@@ -9,5 +9,5 @@ __all__ = ['rag_mean_color',
            'ncut',
            'draw_rag',
            'merge_hierarchical',
-           'rag_boundary'
+           'rag_boundary',
            'RAG']
diff --git a/skimage/future/graph/rag.py b/skimage/future/graph/rag.py
index fc6e1d6f..566c7261 100644
--- a/skimage/future/graph/rag.py
+++ b/skimage/future/graph/rag.py
@@ -4,7 +4,7 @@ from numpy.lib.stride_tricks import as_strided
 from scipy import ndimage as ndi
 from scipy import sparse
 import math
-from ... import draw, measure, segmentation, util, color, morphology
+from ... import draw, measure, segmentation, util, color
 try:
     from matplotlib import colors
     from matplotlib import cm
@@ -364,10 +364,10 @@ def rag_boundary(labels, edge_map, connectivity=2):
     graph_matrix = data_coo.tocsr()
     graph_matrix.data /= count_matrix.data
 
-    rag = nx.Graph()
+    rag = RAG()
     rows, cols = graph_matrix.nonzero()
     graph_data = zip(rows, cols, graph_matrix.data)
-    rag.add_weighted_edges_from(graph_data)
+    rag.add_weighted_edges_from(graph_data, attr='weight')
 
     for n in rag.nodes():
         rag.node[n].update({'labels': [n]})
diff --git a/skimage/future/graph/tests/test_rag.py b/skimage/future/graph/tests/test_rag.py
index 4af3d854..dafa0ddc 100644
--- a/skimage/future/graph/tests/test_rag.py
+++ b/skimage/future/graph/tests/test_rag.py
@@ -212,4 +212,4 @@ def test_rag_boundary():
 
     g = graph.rag_boundary(labels, edge_map, connectivity=1)
     assert len(g.nodes()) == 4
-    assert len(g.edges()) == 4
\ No newline at end of file
+    assert len(g.edges()) == 4