diff --git a/radio/src/targets/common/arm/stm32/usbd_conf.h b/radio/src/targets/common/arm/stm32/usbd_conf.h
index e80b95770..1e7d7a8b1 100644
--- a/radio/src/targets/common/arm/stm32/usbd_conf.h
+++ b/radio/src/targets/common/arm/stm32/usbd_conf.h
@@ -78,7 +78,7 @@
 /*---------- -----------*/
 #define USBD_MAX_NUM_CONFIGURATION 1U
 /*---------- -----------*/
-#define USBD_MAX_STR_DESC_SIZ      512U
+#define USBD_MAX_STR_DESC_SIZ      98U
 /*---------- -----------*/
 #define USBD_DEBUG_LEVEL           0U
 /*---------- -----------*/