diff --git a/CONTRIBUTING.txt b/CONTRIBUTING.txt
index cc96e6d0..202210a1 100644
--- a/CONTRIBUTING.txt
+++ b/CONTRIBUTING.txt
@@ -79,7 +79,7 @@ For a more detailed discussion, read these :doc:`detailed documents
 
 .. note::
 
-   To reviewers: if it is not ovvious, add a short explanation of what a branch
+   To reviewers: if it is not obvious, add a short explanation of what a branch
    did to the merge message and, if closing a bug, also add "Closes #123"
    where 123 is the issue number.