diff --git a/doc/over_sampling.rst b/doc/over_sampling.rst
index 448f4a15a..2d78825cb 100644
--- a/doc/over_sampling.rst
+++ b/doc/over_sampling.rst
@@ -109,7 +109,7 @@ over-sampling methods.
 
   .. [CBHK2002] N. V. Chawla, K. W. Bowyer, L. O.Hall, W. P. Kegelmeyer,
                 "SMOTE: synthetic minority over-sampling technique," Journal of
-                artificial intelligence research, 321-357, 2002.
+                artificial intelligence research, 16, 321-357, 2002.
 
 Ill-posed examples
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