diff --git a/Src/usbd_desc.c b/Src/usbd_desc.c
index 7333ae4..36de851 100644
--- a/Src/usbd_desc.c
+++ b/Src/usbd_desc.c
@@ -65,14 +65,14 @@
     #define CANTACT_SW_VER		"b" STRINGIZE(CANTACT_BUILD_NUMBER)
 #endif
 
-#define USBD_VID			0xad50
-#define USBD_LANGID_STRING		1033
-#define USBD_MANUFACTURER_STRING	"CANtact"
-#define USBD_PID_FS			0x60c4
-#define USBD_PRODUCT_STRING_FS		"CANtact" " " CANTACT_SW_VER
-#define USBD_SERIALNUMBER_STRING_FS     "00000000001A"
-#define USBD_CONFIGURATION_STRING_FS    "CDC Config"
-#define USBD_INTERFACE_STRING_FS	"CDC Interface"
+#define USBD_VID			                      0xad50
+#define USBD_LANGID_STRING		             1033
+#define USBD_MANUFACTURER_STRING	        (uint8_t*)"CANtact"
+#define USBD_PID_FS			                   0x60c4
+#define USBD_PRODUCT_STRING_FS		         (uint8_t*)"CANtact" " " CANTACT_SW_VER
+#define USBD_SERIALNUMBER_STRING_FS      (uint8_t*)"00000000001A"
+#define USBD_CONFIGURATION_STRING_FS     (uint8_t*)"CDC Config"
+#define USBD_INTERFACE_STRING_FS	        (uint8_t*)"CDC Interface"
 
 /**
   * @}