diff --git a/api/s5/http.go b/api/s5/http.go
index 0e0ce25..506618b 100644
--- a/api/s5/http.go
+++ b/api/s5/http.go
@@ -247,7 +247,7 @@ func (h *HttpHandler) AccountRegister(jc jape.Context) {
 		return
 	}
 
-	if len(decodedKey) != 32 {
+	if len(decodedKey) != 33 {
 		errored(err)
 		return
 	}