diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5a650269a..74bad7fa5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -489,7 +489,7 @@ if(BUILD_DOCS)
         "${CMAKE_CURRENT_SOURCE_DIR}/docs/tools"
         "${CMAKE_BINARY_DIR}/docs/html"
         "${CMAKE_BINARY_DIR}/docs/text"
-    ) 
+    )
     add_custom_command(OUTPUT ${SPHINX_OUTPUT}
         COMMAND ${SPHINX_EXECUTABLE}
             -q -b html -d "${CMAKE_BINARY_DIR}/docs/html"