diff --git a/cmake_support/FindSphinx.cmake b/cmake_support/FindSphinx.cmake
index 013d645cb01b2ac2313bae709a9b89b484639ea7..749e9cbdd713e5ba7877f653488f1809b8402f36 100644
--- a/cmake_support/FindSphinx.cmake
+++ b/cmake_support/FindSphinx.cmake
@@ -9,7 +9,7 @@
 #-------------------------------------------------------------------------------
 
 if(Sphinx_FIND_VERSION)
-  set(ADD_SPHINX_NAMES "sphinx-build${Sphinx_FIND_VERSION}")
+  set(ADD_SPHINX_NAMES "sphinx-build-${Sphinx_FIND_VERSION}")
 endif()
 
 if(PYTHON_ROOT)