diff --git a/src/test/regress/bin/normalize.sed b/src/test/regress/bin/normalize.sed
index a4a4091f5..cfa68cf6a 100644
--- a/src/test/regress/bin/normalize.sed
+++ b/src/test/regress/bin/normalize.sed
@@ -65,6 +65,9 @@ s/"(ref_table_[0-9]_|ref_table_[0-9]_value_fkey_)[0-9]+"/"\1xxxxxxx"/g
 /^LINE [0-9]+:.*$/d
 /^ *\^$/d
 
+# Remove trailing whitespace
+s/ *$//g
+
 # pg12 changes
 s/Partitioned table "/Table "/g
 s/\) TABLESPACE pg_default$/\)/g