diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -46,6 +46,6 @@
       DESTINATION doc
       COMPONENT html_documentation
     )
-  ENDIF(UNIX)
+  ENDIF()
 
-ENDIF(DOXYGEN_EXECUTABLE AND GHOSTSCRIPT_EXECUTABLE)
+ENDIF()