diff --git a/backend/routes/member/patch_member.go b/backend/routes/member/patch_member.go
index 06b9a12..ce89db4 100644
--- a/backend/routes/member/patch_member.go
+++ b/backend/routes/member/patch_member.go
@@ -74,7 +74,7 @@ func (s *Server) patchMember(w http.ResponseWriter, r *http.Request) error {
 		*req.Name = strings.TrimSpace(*req.Name)
 	}
 	if req.DisplayName != nil {
-		*req.DisplayName = strings.TrimSpace(*req.Name)
+		*req.DisplayName = strings.TrimSpace(*req.DisplayName)
 	}
 	if req.Bio != nil {
 		*req.Bio = strings.TrimSpace(*req.Bio)