diff --git a/src/ersky9x/audio.cpp b/src/ersky9x/audio.cpp
index 38704791c..fdbe9c8e3 100644
--- a/src/ersky9x/audio.cpp
+++ b/src/ersky9x/audio.cpp
@@ -173,7 +173,9 @@ uint32_t pcmFreq = 8000;
 #ifndef SIMU
 void audioTask(void* pdata)
 {
+#if defined(SDCARD)	
   sdInit();
+#endif  
 
   while (1) {
 
@@ -481,8 +483,10 @@ void AudioQueue::playFile(const char *filename, uint8_t flags, uint8_t id)
   printf("playFile(\"%s\")\n", filename); fflush(stdout);
 #endif
 
+#if defined(SDCARD)
   if (Card_initialized && !sd_card_mounted())
     return;
+#endif 
 
   CoEnterMutexSection(audioMutex);
 
diff --git a/src/open9x.cpp b/src/open9x.cpp
index b2c86ce6a..a3ec01594 100644
--- a/src/open9x.cpp
+++ b/src/open9x.cpp
@@ -1905,9 +1905,11 @@ void evalFunctions()
             if (IS_PLAYING(i+1)) {
               switch_mask = 0;
             }
+#if defined(SDCARD)           
             else {
               PUSH_CUSTOM_PROMPT(sd->param, i+1);
             }
+#endif            
           }
           else if (sd->func == FUNC_PLAY_VALUE) {
             if (IS_PLAYING(i+1)) {
@@ -3128,9 +3130,11 @@ inline void open9xInit(OPEN9X_INIT_ARGS)
     doSplash();
 
 #if defined(PCBARM)
+#if defined(SDCARD) 
     while (!Card_initialized) {
       CoTickDelay(1);  // 2ms
     }
+#endif    
 #endif
 
 #if !defined(PCBARM)