diff --git a/module_usb_audio/endpoint0/descriptors.h b/module_usb_audio/endpoint0/descriptors.h
index 2d5e4f35..170e3f6c 100644
--- a/module_usb_audio/endpoint0/descriptors.h
+++ b/module_usb_audio/endpoint0/descriptors.h
@@ -1432,7 +1432,7 @@ unsigned char cfgDesc_Audio2[] =
 #define STR_INDEX_OUT_CHAN  (10 + SPDIF_RX_NUM_STRS + ADAT_RX_NUM_STRS + MIDI_NUM_STRS + DFU_NUM_STRS)
 #define STR_INDEX_IN_CHAN   (STR_INDEX_OUT_CHAN + NUM_USB_CHAN_OUT)
 
-#define APPEND_VENDOR_STR(x) VENDOR_STR#x
+#define APPEND_VENDOR_STR(x) VENDOR_STR" "#x
 
 #define APPEND_PRODUCT_STR_A2(x) PRODUCT_STR_A2 " "#x