diff --git a/test/Makefile.local b/test/Makefile.local
index 0df72c92..1a0ab813 100644
--- a/test/Makefile.local
+++ b/test/Makefile.local
@@ -62,13 +62,13 @@ test-binaries: $(TEST_BINARIES)
 test:	all test-binaries
 ifeq ($V,)
 	@echo 'Use "$(MAKE) V=1" to see the details for passing and known broken tests.'
-	@env NOTMUCH_TEST_QUIET=1 ${test_src_dir}/notmuch-test $(OPTIONS)
+	@env NOTMUCH_TEST_QUIET=1 $(NOTMUCH_SRCDIR)/$(test_src_dir)/notmuch-test $(OPTIONS)
 else
 # The user has explicitly enabled quiet execution.
 ifeq ($V,0)
-	@env NOTMUCH_TEST_QUIET=1 ${test_src_dir}/notmuch-test $(OPTIONS)
+	@env NOTMUCH_TEST_QUIET=1 $(NOTMUCH_SRCDIR)/$(test_src_dir)/notmuch-test $(OPTIONS)
 else
-	@${test_src_dir}/notmuch-test $(OPTIONS)
+	@$(NOTMUCH_SRCDIR)/$(test_src_dir)/notmuch-test $(OPTIONS)
 endif
 endif