diff --git a/src/crypto/crypto-ops.c b/src/crypto/crypto-ops.c
index 4422f80c..29822831 100644
--- a/src/crypto/crypto-ops.c
+++ b/src/crypto/crypto-ops.c
@@ -26,7 +26,8 @@
 
 #include <assert.h>
 #include <stdint.h>
-
+#include <string.h>
+#include <stddef.h>
 #include "warnings.h"
 #include "crypto-ops.h"