diff --git a/String.cpp b/String.cpp
index a1388027..00e934e3 100644
--- a/String.cpp
+++ b/String.cpp
@@ -621,6 +621,7 @@ CString CString::MD5() const {
 	return (const char*) CMD5(*this);
 }
 
+#ifdef HAVE_LIBSSL
 CString CString::Encrypt_n(const CString& sPass, const CString& sIvec) {
 	CString sRet;
 	sRet.Encrypt(sPass, sIvec);
@@ -665,6 +666,7 @@ void CString::Crypt(const CString& sPass, bool bEncrypt, const CString& sIvec) {
 	append((const char*) szBuff, uLen);
 	free(szBuff);
 }
+#endif	// HAVE_LIBSSL
 
 CString CString::ToString(char c) { stringstream s; s << c; return s.str(); }
 CString CString::ToString(unsigned char c) { stringstream s; s << c; return s.str(); }
diff --git a/String.h b/String.h
index 56409025..302b672b 100644
--- a/String.h
+++ b/String.h
@@ -84,11 +84,13 @@ public:
 	bool Base64Encode(unsigned int uWrap = 0);
 	CString Base64Encode_n(unsigned int uWrap = 0) const;
 
+#ifdef HAVE_LIBSSL
 	CString Encrypt_n(const CString& sPass, const CString& sIvec = "");
 	CString Decrypt_n(const CString& sPass, const CString& sIvec = "");
 	void Encrypt(const CString& sPass, const CString& sIvec = "");
 	void Decrypt(const CString& sPass, const CString& sIvec = "");
 	void Crypt(const CString& sPass, bool bEncrypt, const CString& sIvec = "");
+#endif
 
 	static CString ToString(char c);
 	static CString ToString(unsigned char c);