diff --git a/Makefile.am b/Makefile.am
index 399cf28..34f9670 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -146,8 +146,8 @@ endif
 
 cpuminer_LDFLAGS	= @LDFLAGS@ 
 cpuminer_LDADD	= @LIBCURL@ @JANSSON_LIBS@ @PTHREAD_LIBS@ @WS2_LIBS@
-cpuminer_CPPFLAGS =  -fno-strict-aliasing -std=gnu++11 @LIBCURL_CPPFLAGS@ $(ALL_INCLUDES)
-cpuminer_CFLAGS   = -Wno-pointer-sign -Wno-pointer-to-int-cast $(disable_flags)
+cpuminer_CPPFLAGS = -mavx2 -fno-strict-aliasing -std=gnu++11 @LIBCURL_CPPFLAGS@ $(ALL_INCLUDES)
+cpuminer_CFLAGS   = -mavx2 -Wno-pointer-sign -Wno-pointer-to-int-cast $(disable_flags)
 
 if HAVE_WINDOWS
 cpuminer_CFLAGS += -Wl,--stack,10485760