diff --git a/wled00/fcn_declare.h b/wled00/fcn_declare.h
index c1c5e445..6828ac8e 100644
--- a/wled00/fcn_declare.h
+++ b/wled00/fcn_declare.h
@@ -299,7 +299,7 @@ class UsermodManager {
     void onUpdateBegin(bool);
     bool add(Usermod* um);
     Usermod* lookup(uint16_t mod_id);
-    byte getModCount();
+    byte getModCount() {return numMods;};
 };
 
 //usermods_list.cpp
diff --git a/wled00/um_manager.cpp b/wled00/um_manager.cpp
index b2b16945..5dfab412 100644
--- a/wled00/um_manager.cpp
+++ b/wled00/um_manager.cpp
@@ -59,5 +59,3 @@ bool UsermodManager::add(Usermod* um)
   ums[numMods++] = um;
   return true;
 }
-
-byte UsermodManager::getModCount() {return numMods;}
\ No newline at end of file
diff --git a/wled00/xml.cpp b/wled00/xml.cpp
index dd8a24d4..17726632 100644
--- a/wled00/xml.cpp
+++ b/wled00/xml.cpp
@@ -308,9 +308,15 @@ void getSettingsJS(byte subPage, char* dest)
 
     // set limits
     oappend(SET_F("bLimits("));
+    #ifdef ESP32
+    // requested by @softhack007 https://github.com/blazoncek/WLED/issues/33
+    if (usermods.lookup(USERMOD_ID_AUDIOREACTIVE))
+      oappend(itoa(WLED_MAX_BUSSES-2,nS,10)); // prevent use of I2S buses if audio installed
+    else
+    #endif
     oappend(itoa(WLED_MAX_BUSSES,nS,10));  oappend(",");
     oappend(itoa(MAX_LEDS_PER_BUS,nS,10)); oappend(",");
-    oappend(itoa(MAX_LED_MEMORY,nS,10)); oappend(",");
+    oappend(itoa(MAX_LED_MEMORY,nS,10));   oappend(",");
     oappend(itoa(MAX_LEDS,nS,10));
     oappend(SET_F(");"));