diff --git a/display/d.labels/do_labels.c b/display/d.labels/do_labels.c
index dbf97bb69a7..9c78e4f27f4 100644
--- a/display/d.labels/do_labels.c
+++ b/display/d.labels/do_labels.c
@@ -463,6 +463,8 @@ int scan_ref(char *buf)
         FALLTHROUGH;
     default:
         return 0;
+    case EOF:
+        return 0;
     }
 }