diff --git a/share/cmake/Modules/FindSphinx.cmake b/share/cmake/Modules/FindSphinx.cmake
index b8cc28a8..6901b853 100644
--- a/share/cmake/Modules/FindSphinx.cmake
+++ b/share/cmake/Modules/FindSphinx.cmake
@@ -32,6 +32,6 @@ else()
 endif ()
 
 include(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(SPHINX DEFAULT_MSG SPHINXBUILD_EXECUTABLE)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Sphinx DEFAULT_MSG SPHINXBUILD_EXECUTABLE)
 
 mark_as_advanced( SPHINXBUILD_EXECUTABLE )