diff --git a/Documentation/all.do b/Documentation/all.do
index 5b92040..4eb85e4 100644
--- a/Documentation/all.do
+++ b/Documentation/all.do
@@ -1,4 +1,4 @@
-redo-ifchange doc.list cookbook/all
+redo-ifchange doc.list
 sed 's/\.md/.1/' <doc.list |
 xargs redo-ifchange
 
diff --git a/Documentation/test.do b/Documentation/test.do
new file mode 100644
index 0000000..17da162
--- /dev/null
+++ b/Documentation/test.do
@@ -0,0 +1,4 @@
+# We don't normally build the cookbook examples, because they're
+# not really part of redo itself.  But build them when testing,
+# as a basic check that redo (and the examples) are valid.
+redo cookbook/all
diff --git a/test.do b/test.do
index 9ea2c31..9650ea6 100644
--- a/test.do
+++ b/test.do
@@ -1,3 +1,3 @@
 redo-ifchange _all
-redo minimal/test t/all
+redo minimal/test Documentation/test t/all
 [ -n "$DO_BUILT" ] || echo "Don't forget to test 'minimal/do -c test'" >&2