diff --git a/cyassl/ssl.h b/cyassl/ssl.h
index 8107b585f..c5f651a98 100644
--- a/cyassl/ssl.h
+++ b/cyassl/ssl.h
@@ -50,7 +50,9 @@
 #define CYASSL_X509       WOLFSSL_X509
 #define CYASSL_X509_NAME  WOLFSSL_X509_NAME
 #define CYASSL_X509_CHAIN WOLFSSL_X509_CHAIN
-#define CYASSL_SNIFFER    WOLFSSL_SNIFFER
+#ifdef WOLFSSL_SNIFFER
+    #define CYASSL_SNIFFER    WOLFSSL_SNIFFER
+#endif
 
 /* redeclare guard */
 #define CYASSL_TYPES_DEFINED WOLFSSL_TYPES_DEFINED