diff --git a/Makefile b/Makefile
index acf50cfa3..887822a6b 100644
--- a/Makefile
+++ b/Makefile
@@ -100,7 +100,7 @@ contrib: lib
 	$(MAKE) -C contrib/pzstd all
 	$(MAKE) -C contrib/seekable_format/examples all
 	$(MAKE) -C contrib/largeNbDicts all
-	cd contrib/single_file_decoder/ ; ./build_test.sh
+	cd contrib/single_file_decoder/ ; ls ; sh ./build_test.sh
 
 .PHONY: cleanTabs
 cleanTabs: