diff --git a/wiki/.gitignore b/wiki/.gitignore
new file mode 100644
index 0000000..e5af9ee
--- /dev/null
+++ b/wiki/.gitignore
@@ -0,0 +1 @@
+/unix/index.html
diff --git a/wiki/Makefile b/wiki/Makefile
index 772e1c4..9c05f58 100644
--- a/wiki/Makefile
+++ b/wiki/Makefile
@@ -1,5 +1,5 @@
 all: unix/index.html
-unix/index.html: unix/*
+unix/index.html: unix/*.m4
 	$(MAKE) -C unix
 clean:
 	$(MAKE) -C unix clean