diff --git a/src/PsychicHttpsServer.h b/src/PsychicHttpsServer.h
index 1f356c5..e6542c6 100644
--- a/src/PsychicHttpsServer.h
+++ b/src/PsychicHttpsServer.h
@@ -1,6 +1,8 @@
 #ifndef PsychicHttpsServer_h
 #define PsychicHttpsServer_h
 
+#include <sdkconfig.h>
+
 #ifdef CONFIG_ESP_HTTPS_SERVER_ENABLE
 
 #include "PsychicCore.h"
@@ -32,4 +34,6 @@ class PsychicHttpsServer : public PsychicHttpServer
 
 #endif // PsychicHttpsServer_h
 
+#else
+  #error ESP-IDF https server support not enabled.
 #endif // CONFIG_ESP_HTTPS_SERVER_ENABLE
\ No newline at end of file