diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index 4599a80..a01c5d8 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -44,7 +44,7 @@ PROJECT_NUMBER         = @CMAKE_PROJECT_VERSION@
 # for a project that appears at the top of each page and should give viewer a
 # quick idea about the purpose of the project. Keep the description short.
 
-PROJECT_BRIEF          = "C++ functionnal terminal UI."
+PROJECT_BRIEF          = "C++ functional terminal UI."
 
 # With the PROJECT_LOGO tag one can specify a logo or an icon that is included
 # in the documentation. The maximum height of the logo should not exceed 55