diff --git a/server/callback.go b/server/callback.go
index 1481f6f..8aead36 100644
--- a/server/callback.go
+++ b/server/callback.go
@@ -33,6 +33,8 @@ func (ce CallbackError) HttpStatus() (code int) {
 		code = http.StatusUnauthorized
 	case CallbackErrorServerError:
 		code = http.StatusInternalServerError
+	default:
+		code = http.StatusInternalServerError
 	}
 	return
 }
@@ -47,6 +49,8 @@ func (ce CallbackError) String() (out string) {
 		out = "user unauthorized"
 	case CallbackErrorServerError:
 		out = "internal server error"
+	default:
+		out = "unhandled error"
 	}
 	return
 }
diff --git a/server/token.go b/server/token.go
index cf87b49..d66b017 100644
--- a/server/token.go
+++ b/server/token.go
@@ -39,6 +39,8 @@ func (te TokenError) HttpStatus() (code int) {
 		code = http.StatusBadRequest
 	case TokenErrorPending:
 		code = http.StatusBadRequest
+	default:
+		code = http.StatusInternalServerError
 	}
 	return
 }
@@ -57,6 +59,8 @@ func (te TokenError) String() (out string) {
 		out = "slow down"
 	case TokenErrorPending:
 		out = "authorization pending"
+	default:
+		out = "unhandled error"
 	}
 	return
 }