diff --git a/release_notes.md b/release_notes.md
index 8898a3ea72..db8f63a53e 100644
--- a/release_notes.md
+++ b/release_notes.md
@@ -7,7 +7,7 @@ OpenMDAO 3.31.1 is a patch release to fix a bug in the newly deprecated `list_pr
 
 ## Bug Fixes
 
-- Fixed bug in deprecated list_problem_vars() function . [#3149](https://github.com/OpenMDAO/OpenMDAO/pull/3149)
+- Fixed bug in deprecated list_problem_vars() function. [#3149](https://github.com/OpenMDAO/OpenMDAO/pull/3149)
 
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 # Release Notes for OpenMDAO 3.31.0