diff --git a/qad/doc/CMakeLists.txt b/qad/doc/CMakeLists.txt
index 5bd3a86..8df0534 100644
--- a/qad/doc/CMakeLists.txt
+++ b/qad/doc/CMakeLists.txt
@@ -3,15 +3,23 @@ set(CHECK_INCLUDES "-include stdio.h")
 if(WIN32)
 	set(CHECK_INCLUDES "-include windows.h -include stdio.h")
 endif()
+set(_mkd_header_found 0)
 check_include_file_cxx("mkdio.h" MARKDOWN_HEADER_MKDIO ${CHECK_INCLUDES})
-if (MARKDOWN_HEADER_MKDIO)
+if (MARKDOWN_HEADER_MKDIO OR APPLE)
+	set(_mkd_header_found 1)
 	add_definitions("-DMARKDOWN_HEADER=\"mkdio.h\"")
-endif()
-check_include_file_cxx("markdown/markdown.h" MARKDOWN_HEADER_MARKDOWN ${CHECK_INCLUDES})
-if (MARKDOWN_HEADER_MARKDOWN)
-	add_definitions("-DMARKDOWN_HEADER=\"markdown/markdown.h\"")
+else()
+	check_include_file_cxx("markdown/markdown.h" MARKDOWN_HEADER_MARKDOWN ${CHECK_INCLUDES})
+	if (MARKDOWN_HEADER_MARKDOWN)
+		set(_mkd_header_found 1)
+		add_definitions("-DMARKDOWN_HEADER=\"markdown/markdown.h\"")
+	endif()
 endif()
 find_library(MARKDOWN_LIBRARY markdown)
 if (MARKDOWN_LIBRARY)
-	qad_project(doc "Core" "${MARKDOWN_LIBRARY}")
+	if(_mkd_header_found)
+		qad_project(doc "Core" "${MARKDOWN_LIBRARY}")
+	else()
+		message(STATUS "Found markdown library, but *.h missing!")
+	endif()
 endif()