diff --git a/src/cyassl_int.c b/src/cyassl_int.c
index 91c8d37c1..e59bf6cd4 100644
--- a/src/cyassl_int.c
+++ b/src/cyassl_int.c
@@ -153,7 +153,7 @@ void c32to24(word32 in, word24 out)
 }
 
 
-#ifdef CYASLS_DTLS
+#ifdef CYASSL_DTLS
 
 static INLINE void c32to48(word32 in, byte out[6])
 {