diff --git a/crypto/ec/ec_key.c b/crypto/ec/ec_key.c
index 6c933d22e..584b15598 100644
--- a/crypto/ec/ec_key.c
+++ b/crypto/ec/ec_key.c
@@ -64,7 +64,6 @@
 #include <string.h>
 #include "ec_lcl.h"
 #include <openssl/err.h>
-#include <string.h>
 
 EC_KEY *EC_KEY_new(void)
 	{