diff --git a/test/Makefile.in b/test/Makefile.in
index 67d203df297..b6cf6493e32 100644
--- a/test/Makefile.in
+++ b/test/Makefile.in
@@ -268,6 +268,7 @@ $(test_module): $(test_module:${SO}=.c) ../src/emacs-module.h
 	$(AM_V_CCLD)$(CC) -shared $(CPPFLAGS) $(MODULE_CFLAGS) $(LDFLAGS) \
 	  -o $@ $< $(LIBGMP) \
 	  $(and $(GMP_H),$(srcdir)/../lib/mini-gmp-gnulib.c) \
+	  $(if $(OMIT_GNULIB_MODULE_free-posix),,$(srcdir)/../lib/free.c) \
 	  $(srcdir)/../lib/timespec.c $(srcdir)/../lib/gettime.c
 endif