diff --git a/src/fido/cmd_version.c b/src/fido/cmd_version.c
index 4f4a626..5bff13d 100644
--- a/src/fido/cmd_version.c
+++ b/src/fido/cmd_version.c
@@ -20,7 +20,7 @@
 #include "hsm.h"
 
 int cmd_version() {
-    memcpy(res_APDU, "CTAP_V2", strlen("U2F_V2"));
+    memcpy(res_APDU, "U2F_V2", strlen("U2F_V2"));
     res_APDU_size = strlen("U2F_V2");
     return SW_OK();
 }