diff --git a/client/Makefile b/client/Makefile
index 6eb3548..a9ff0c0 100644
--- a/client/Makefile
+++ b/client/Makefile
@@ -17,6 +17,8 @@ DATA =  $(NEW_EXTENSION_ARTIFACT) \
 
 
 REGRESS = $(notdir $(basename $(wildcard test/$(EXTVERSION)/sql/*test.sql)))
+TEST_DIR = test/$(EXTVERSION)
+REGRESS_OPTS = --inputdir='$(TEST_DIR)' --outputdir='$(TEST_DIR)'
 
 # postgres build stuff
 PG_CONFIG = pg_config