Makefile.power | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Makefile.power b/Makefile.power
index 24d8aa8a..e53a243a 100644
--- a/Makefile.power
+++ b/Makefile.power
@@ -11,20 +11,20 @@ endif
 
 ifeq ($(CORE), POWER9)
 ifeq ($(USE_OPENMP), 1)
-COMMON_OPT += -Ofast -mcpu=power9 -mtune=power9 -mvsx -malign-power -DUSE_OPENMP -fno-fast-math -fopenmp
+COMMON_OPT += -mcpu=power9 -mtune=power9 -mvsx -malign-power -DUSE_OPENMP -fno-fast-math -fopenmp
 FCOMMON_OPT += -O2 -frecursive -mcpu=power9 -mtune=power9 -malign-power -DUSE_OPENMP -fno-fast-math -fopenmp
 else
-COMMON_OPT += -Ofast -mcpu=power9 -mtune=power9 -mvsx -malign-power -fno-fast-math
+COMMON_OPT += -mcpu=power9 -mtune=power9 -mvsx -malign-power -fno-fast-math
 FCOMMON_OPT += -O2 -frecursive -mcpu=power9 -mtune=power9 -malign-power -fno-fast-math
 endif
 endif
 
 ifeq ($(CORE), POWER8)
 ifeq ($(USE_OPENMP), 1)
-COMMON_OPT += -Ofast -mcpu=power8 -mtune=power8 -mvsx -malign-power -DUSE_OPENMP -fno-fast-math -fopenmp
+COMMON_OPT += -mcpu=power8 -mtune=power8 -mvsx -malign-power -DUSE_OPENMP -fno-fast-math -fopenmp
 FCOMMON_OPT += -O2 -frecursive -mcpu=power8 -mtune=power8 -malign-power -DUSE_OPENMP -fno-fast-math -fopenmp
 else
-COMMON_OPT += -Ofast -mcpu=power8 -mtune=power8 -mvsx -malign-power -fno-fast-math
+COMMON_OPT += -mcpu=power8 -mtune=power8 -mvsx -malign-power -fno-fast-math
 FCOMMON_OPT += -O2 -frecursive -mcpu=power8 -mtune=power8 -malign-power -fno-fast-math
 endif
 endif