diff --git a/src/Makefile.am b/src/Makefile.am
index 6044366..73c0c61 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -388,7 +388,7 @@
 test_ot_tag_CPPFLAGS = $(HBCFLAGS) -DMAIN
 test_ot_tag_LDADD = libharfbuzz.la $(HBLIBS)
 
-test_unicode_ranges_SOURCES = hb-ot-os2-unicode-ranges.cc
+test_unicode_ranges_SOURCES = test-unicode-ranges.cc
 test_unicode_ranges_CPPFLAGS = $(HBCFLAGS) -DMAIN
 test_unicode_ranges_LDADD = libharfbuzz.la $(HBLIBS)