diff --git a/wiki/Makefile b/wiki/Makefile
index 7b6c59e..7bec8f2 100644
--- a/wiki/Makefile
+++ b/wiki/Makefile
@@ -4,11 +4,9 @@ DST_HTML_FILES := index.html $(SRC_MD_FILES:source/%.md=%.html)
 PANDOC != command -v pandoc 2> /dev/null
 PHP != command -v php 2> /dev/null
 
-all: dep-pandoc $(DST_HTML_FILES)
+all: dep-pandoc dep-php $(DST_HTML_FILES)
 
-index.html: index.php
-
-%.html: %.php dep-php
+%.html: %.php
 	php $< > $@
 
 %.html: source/%.md