diff --git a/test/Makefile b/test/Makefile
index ec2a86fcf..85bdca103 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,7 +1,9 @@
 TOPDIR	= ..
 include ../Makefile.system
 ifeq ($(F_COMPILER),GFORTRAN)
+ifneq (, $(filter $(CORE),LOONGSON3R3 LOONGSON3R4))
 	override FFLAGS = $(filter_out(-O2 -O3,$(FFLAGS)) -O0
+endif
         override FFLAGS += -fno-tree-vectorize
 endif