diff --git a/test-tool/Makefile.am b/test-tool/Makefile.am
index 200f2cbaf..bb2e03c95 100644
--- a/test-tool/Makefile.am
+++ b/test-tool/Makefile.am
@@ -37,7 +37,8 @@ libguestfs_test_tool_CFLAGS = \
 	$(GPROF_CFLAGS) $(GCOV_CFLAGS)
 
 libguestfs_test_tool_LDADD = \
-	$(top_builddir)/src/libguestfs.la
+	$(top_builddir)/src/libguestfs.la \
+	$(top_builddir)/gnulib/lib/libgnu.la
 
 libguestfs-test-tool.1 $(top_builddir)/html/libguestfs-test-tool.1.html: stamp-libguestfs-test-tool.pod