diff --git a/Makefile b/Makefile
index 2aa40be..428c3f1 100644
--- a/Makefile
+++ b/Makefile
@@ -21,6 +21,8 @@ combine=${path_tools}/combine
 default: combine min
 all:     combine min doc
 
+mkbuild: $(path_build)
+
 # create build dir
 $(path_build):
 	mkdir -p "$(path_build)"
diff --git a/doc/Makefile b/doc/Makefile
index 6b03931..87661ba 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -37,7 +37,6 @@ mkbuild-doc: $(path_doc_output)
 
 $(path_doc_output):
 	[ -d $(path_doc_output) ] || mkdir -p "$(path_doc_output)"
-mkbuild: $(path_build)
 
 # doc images
 $(path_doc)/img/%.png: $(path_doc)/img/%.dia