diff --git a/test_regress/Makefile b/test_regress/Makefile
index 4836cc6b2..d59b51155 100644
--- a/test_regress/Makefile
+++ b/test_regress/Makefile
@@ -35,7 +35,7 @@ endif
 
 # Run tests in parallel.  Requires Parallel::Forker to be installed.
 ifeq ($(CFG_WITH_LONGTESTS),yes)
- DRIVER_FLAGS += -j 0 --rerun
+ DRIVER_FLAGS += -j 0 --quiet --rerun
 endif
 
 .SUFFIXES: