diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 8dd0333b01dc..02069c23486d 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1063,7 +1063,7 @@ struct mem_section {
 	unsigned long *pageblock_flags;
 #ifdef CONFIG_PAGE_EXTENSION
 	/*
-	 * If !SPARSEMEM, pgdat doesn't have page_ext pointer. We use
+	 * If SPARSEMEM, pgdat doesn't have page_ext pointer. We use
 	 * section. (see page_ext.h about this.)
 	 */
 	struct page_ext *page_ext;