diff --git a/wolfssl/openssl/sha.h b/wolfssl/openssl/sha.h
index 7120ecb17..d7078d4f8 100644
--- a/wolfssl/openssl/sha.h
+++ b/wolfssl/openssl/sha.h
@@ -158,7 +158,7 @@ typedef WOLFSSL_SHA256_CTX SHA256_CTX;
 
 typedef struct WOLFSSL_SHA384_CTX {
     /* big enough to hold wolfCrypt Sha384, but check on init */
-    void* holder[(256 + WC_ASYNC_DEV_SIZE) / sizeof(void*)];
+    void* holder[(268 + WC_ASYNC_DEV_SIZE) / sizeof(void*)];
 } WOLFSSL_SHA384_CTX;
 
 WOLFSSL_API int wolfSSL_SHA384_Init(WOLFSSL_SHA384_CTX*);