diff --git a/Crypto/include/Poco/Crypto/OpenSSLInitializer.h b/Crypto/include/Poco/Crypto/OpenSSLInitializer.h
index dd716a2f4..1fd82b748 100644
--- a/Crypto/include/Poco/Crypto/OpenSSLInitializer.h
+++ b/Crypto/include/Poco/Crypto/OpenSSLInitializer.h
@@ -128,7 +128,11 @@ inline void OpenSSLInitializer::enableFIPSMode(bool /*enabled*/)
 
 inline bool OpenSSLInitializer::haveLegacyProvider()
 {
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
 	return _legacyProvider != nullptr;
+#else
+	return false;
+#endif
 }