diff --git a/README.md b/README.md
index eb0695cbe80a4ca197090156da52ee661ab82dd0..4f611a60a3a3b458c8201c4507af7fe1b9cec61c 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ GESAs are constructed from ESAs using a generalization of the merging
method from [2].
**NOTE** currently Algorithm 5.21 (from [2]) is implemented with a
-worst-case O(n^2) complexity. We should implement Section 5.5.5.
+worst-case O(n^2 ) complexity. We should implement Section 5.5.5.
## References
[1] J. Fischer. Inducing the LCP-Array. In F. Dehne, J. Iacono, and J. Sack, editors, *Algorithms and Data Structures: 12th International Symposium, WADS 2011, New York, USA, August 15-17, 2011. Proceedings*, pages 374-385. Springer, 2011.