diff --git a/wolfcrypt/src/hmac.c b/wolfcrypt/src/hmac.c
index b423c4a4a..b46db6a3c 100755
--- a/wolfcrypt/src/hmac.c
+++ b/wolfcrypt/src/hmac.c
@@ -54,7 +54,7 @@
     }
     int wc_HmacUpdate(Hmac* hmac, const byte* in, word32 sz)
     {
-        if (hmac == NULL || in == NULL) {
+        if (hmac == NULL) {
             return BAD_FUNC_ARG;
         }