diff --git a/lib/auth/webauthncli/fido2_prompt.go b/lib/auth/webauthncli/fido2_prompt.go
index 7c2c8b1ad278b..bf5130fd9760f 100644
--- a/lib/auth/webauthncli/fido2_prompt.go
+++ b/lib/auth/webauthncli/fido2_prompt.go
@@ -106,6 +106,6 @@ func (p *DefaultPrompt) PromptCredential(creds []*Credential) (*Credential, erro
 			return creds[num-1], nil
 		}
 
-		fmt.Fprintf(p.out, "Invalid user choice: %q", numOrName)
+		fmt.Fprintf(p.out, "Invalid user choice: %q\n", numOrName)
 	}
 }