diff --git a/Makefile.linux b/Makefile.linux
index 8def8299..6d4762b1 100644
--- a/Makefile.linux
+++ b/Makefile.linux
@@ -60,7 +60,12 @@ ifeq ($(USE_AESNI),yes)
 ifeq ($(IS_64),1)
 #check if AES-NI is supported by CPU
 ifneq ($(shell $(GREP) -c aes /proc/cpuinfo),0)
-	CPU_FLAGS = -maes -DAESNI
+	CPU_FLAGS += -maes -DAESNI
 endif
 endif
 endif
+
+#check if AVX supported by CPU
+ifneq ($(shell $(GREP) -c avx /proc/cpuinfo),0)
+	CPU_FLAGS += -mavx
+endif