diff --git a/packages/backend/src/misc/hard-limits.ts b/packages/backend/src/misc/hard-limits.ts
index 62671a706a..5ce3e0ac9a 100644
--- a/packages/backend/src/misc/hard-limits.ts
+++ b/packages/backend/src/misc/hard-limits.ts
@@ -3,6 +3,11 @@
 /**
  * Maximum note text length that can be stored in DB.
  * Surrogate pairs count as one
+ *
+ * NOTE: this can hypothetically be pushed further
+ * (up to 250000000), but will likely cause truncations
+ * and incompatibilities with other servers,
+ * as well as potential performance issues.
  */
 export const DB_MAX_NOTE_TEXT_LENGTH = 100000;