diff --git a/src/test/regress/expected/explain.out b/src/test/regress/expected/explain.out
index a1ee6c6792..dc7ab2ce8b 100644
--- a/src/test/regress/expected/explain.out
+++ b/src/test/regress/expected/explain.out
@@ -23,6 +23,9 @@ begin
         -- Ignore text-mode buffers output because it varies depending
         -- on the system state
         CONTINUE WHEN (ln ~ ' +Buffers: .*');
+        -- Ignore text-mode "Planning:" line because whether it's output
+        -- varies depending on the system state
+        CONTINUE WHEN (ln = 'Planning:');
         return next ln;
     end loop;
 end;
diff --git a/src/test/regress/sql/explain.sql b/src/test/regress/sql/explain.sql
index 01783c607a..c79116c927 100644
--- a/src/test/regress/sql/explain.sql
+++ b/src/test/regress/sql/explain.sql
@@ -25,6 +25,9 @@ begin
         -- Ignore text-mode buffers output because it varies depending
         -- on the system state
         CONTINUE WHEN (ln ~ ' +Buffers: .*');
+        -- Ignore text-mode "Planning:" line because whether it's output
+        -- varies depending on the system state
+        CONTINUE WHEN (ln = 'Planning:');
         return next ln;
     end loop;
 end;