diff --git a/Makefile b/Makefile
index b912fd8..8bac800 100644
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,7 @@ test: all test-js
 	$(PYTHON) -m jiten.kana      $(VERBOSE) --doctest
 	$(PYTHON) -m jiten.kanji     $(VERBOSE) --doctest
 	$(PYTHON) -m jiten.misc      $(VERBOSE) --doctest
+	! test -e nonfree-data/pitch || \
 	$(PYTHON) -m jiten.pitch     $(VERBOSE) --doctest
 	$(PYTHON) -m jiten.sentences $(VERBOSE) --doctest
 
@@ -47,6 +48,7 @@ coverage: tmp-html
 	$(PYCOV) -a -m jiten.kana      --doctest
 	$(PYCOV) -a -m jiten.kanji     --doctest
 	$(PYCOV) -a -m jiten.misc      --doctest
+	! test -e nonfree-data/pitch || \
 	$(PYCOV) -a -m jiten.pitch     --doctest
 	$(PYCOV) -a -m jiten.sentences --doctest
 	$(PYTHON) -mcoverage html
diff --git a/jiten/app.py b/jiten/app.py
index f30a1d8..0d23cff 100644
--- a/jiten/app.py
+++ b/jiten/app.py
@@ -18,8 +18,9 @@
 
 Web interface.
 
->>> import re
+>>> import os, re
 
+>>> have_nonfree = os.path.exists("nonfree-data/pitch")
 >>> app.testing = True
 >>> client = app.test_client()
 
@@ -43,9 +44,9 @@
 
 >>> d = get("/jmdict?query=kitten&word=yes")
 200 OK
->>> "こꜛねꜜこ" in d
+>>> "こꜛねꜜこ" in d or not have_nonfree
 True
->>> "koꜛneꜜko" in d
+>>> "koꜛneꜜko" in d or not have_nonfree
 True
 >>> "kitten" in d
 True