diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 59ab812d2e..bb9d309f4e 100644
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -3464,6 +3464,14 @@ ProcessInterrupts(void)
 		HandleParallelApplyMessages();
 }
 
+void prepare_stack(int n)
+{
+	char buffer[1024 * 1024];
+	memset(buffer, 0, sizeof(buffer));
+	if (n > 0)
+		prepare_stack(n - 1);
+}
+
 /*
  * set_stack_base: set up reference point for stack depth checking
  *
@@ -3490,6 +3498,7 @@ set_stack_base(void)
 	stack_base_ptr = &stack_base;
 #endif
 
+	prepare_stack((max_stack_depth_bytes + STACK_DEPTH_SLOP) / (1024 * 1024));
 	return old;
 }