diff --git a/src/AsyncEventSource.h b/src/AsyncEventSource.h
index 18868ba..2efb0dd 100644
--- a/src/AsyncEventSource.h
+++ b/src/AsyncEventSource.h
@@ -44,11 +44,13 @@
 #endif
 #endif
 
+#ifndef DEFAULT_MAX_SSE_CLIENTS
 #ifdef ESP32
 #define DEFAULT_MAX_SSE_CLIENTS 8
 #else
 #define DEFAULT_MAX_SSE_CLIENTS 4
 #endif
+#endif
 
 class AsyncEventSource;
 class AsyncEventSourceResponse;