diff --git a/testsuite/tests/ghci/linking/dyn/Makefile b/testsuite/tests/ghci/linking/dyn/Makefile
index d4a65a6603bf28b972fe708f923c9ea8670cdec8..ee345e55606ee787a7efc4f482eb870ed6c2a572 100644
--- a/testsuite/tests/ghci/linking/dyn/Makefile
+++ b/testsuite/tests/ghci/linking/dyn/Makefile
@@ -94,7 +94,7 @@ compile_libAS_impl_msvc:
 
 .PHONY: T1407
 T1407:
-	cat T1407.script | LD_LIBRARY_PATH=. "$(TEST_HC)" $(TEST_HC_OPTS_INTERACTIVE) -L"T1407dir"
+	cat T1407.script | LD_LIBRARY_PATH=".:$(LD_LIBRARY_PATH)" "$(TEST_HC)" $(TEST_HC_OPTS_INTERACTIVE) -L"T1407dir"
 
 .PHONY: T3242
 	echo ":q" | '$(TEST_HC)' $(TEST_HC_OPTS_INTERACTIVE) -lm