diff --git a/cyassl/ctaocrypt/fips_test.h b/cyassl/ctaocrypt/fips_test.h
index 0ad9c6285..b492a4fd7 100644
--- a/cyassl/ctaocrypt/fips_test.h
+++ b/cyassl/ctaocrypt/fips_test.h
@@ -31,7 +31,7 @@
 #endif
 
 /* Known Answer Test string inputs are hex, internal */
-CYASSL_LOCAL int DoKnownAnswerTests(char*);
+CYASSL_LOCAL int DoKnownAnswerTests(char*, int);
 
 
 /* FIPS failure callback */