diff --git a/src/class/audio/audio_device.h b/src/class/audio/audio_device.h
index 9ff74d6c..e2208629 100644
--- a/src/class/audio/audio_device.h
+++ b/src/class/audio/audio_device.h
@@ -149,6 +149,7 @@
 #define CFG_TUD_AUDIO_FUNC_3_EP_OUT_SW_BUF_SZ               0
 #endif
 
+#if CFG_TUD_AUDIO_ENABLE_EP_IN
 #if CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ < CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX
 #error EP software buffer size MUST BE at least as big as maximum EP size
 #endif
@@ -164,7 +165,9 @@
 #error EP software buffer size MUST BE at least as big as maximum EP size
 #endif
 #endif
+#endif
 
+#if CFG_TUD_AUDIO_ENABLE_EP_OUT
 #if CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ < CFG_TUD_AUDIO_FUNC_1_EP_OUT_SZ_MAX
 #error EP software buffer size MUST BE at least as big as maximum EP size
 #endif
@@ -180,6 +183,7 @@
 #error EP software buffer size MUST BE at least as big as maximum EP size
 #endif
 #endif
+#endif
 
 // Enable/disable feedback EP (required for asynchronous RX applications)
 #ifndef CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP