diff --git a/application.c b/application.c
index c7bb9d6..f893950 100644
--- a/application.c
+++ b/application.c
@@ -189,7 +189,7 @@ static void command_version(void* argument)
 	// 0x430: XL-density, 768-1024 kB flash
 	// 0x418: connectivity
 	printf("device family: ");
-	switch (DBGMCU_IDCODE&DBGMCU_IDCODE_DEV_ID_MASK) {
+	switch (DBGMCU_IDCODE & DBGMCU_IDCODE_DEV_ID_MASK) {
 		case 0: // this is a known issue document in STM32F10xxC/D/E Errata sheet, without workaround
 			printf("unreadable\n");
 			break;