diff --git a/tests/port-forwarding/Makefile b/tests/port-forwarding/Makefile
index 7ca5e33..d325bdd 100644
--- a/tests/port-forwarding/Makefile
+++ b/tests/port-forwarding/Makefile
@@ -42,7 +42,7 @@ clean:
 	rm -f *~ $(BUILT_FILES)
 
 
-include /usr/share/rhts/lib/rhts-make.include
+-include /usr/share/rhts/lib/rhts-make.include
 
 $(METADATA): Makefile
 	@echo "Owner:           Stanislav Zidek <szidek@redhat.com>" > $(METADATA)