diff --git a/pgindent_exclude b/pgindent_exclude
index bf45e62c..d3265de3 100644
--- a/pgindent_exclude
+++ b/pgindent_exclude
@@ -4,3 +4,6 @@
 # This contains code copied from postgres tree as is and slightly modified.
 # We don't want to run pgindent on these files to avoid unnecessary conflicts.
 src\d\d/
+
+# This file is generated by configure and should not be formatted
+src/include/config.h