diff --git a/docs/build_docs.py b/docs/build_docs.py
index 59c1860b823f8..978e788838c51 100755
--- a/docs/build_docs.py
+++ b/docs/build_docs.py
@@ -52,6 +52,7 @@
 
 ERRORS_ELIGIBLE_TO_REBUILD = [
     'failed to reach any of the inventories with the following issues',
+    'toctree contains reference to nonexisting document',
     'undefined label:',
     'unknown document:',
     'Error loading airflow.providers',