diff --git a/api/api.go b/api/api.go
index 8c2d8a2c..13a98d49 100644
--- a/api/api.go
+++ b/api/api.go
@@ -281,7 +281,7 @@ func (s *Server) toEchoHandler(handlerFunc any) echo.HandlerFunc {
 		if len(results) == 1 {
 			// Handle the returned error
 			if results[0].Interface() != nil {
-				err, ok := results[1].Interface().(error)
+				err, ok := results[0].Interface().(error)
 				if !ok {
 					return c.JSON(http.StatusInternalServerError, HTTPError{Err: "invalid handler function signature"})
 				}