diff --git a/Makefile.in b/Makefile.in
index 48781c60f..5723cbe65 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -54,7 +54,7 @@ else
 endif
 
 CROSSLDFLAGS   += -Wl,--file-alignment,4096
-OPTIMIZE_FLAGS := -O2 -march=x86-64-v3 
+OPTIMIZE_FLAGS := -O2
 SANITY_FLAGS   := -fwrapv -fno-strict-aliasing
 DEBUG_FLAGS    := -ggdb -ffunction-sections -fdata-sections -fno-omit-frame-pointer
 COMMON_FLAGS    = $(DEBUG_FLAGS) $(OPTIMIZE_FLAGS) $(SANITY_FLAGS) -ffile-prefix-map=$(CCACHE_BASEDIR)=.