diff --git a/README.md b/README.md
index 6a0f46d..77c2da3 100644
--- a/README.md
+++ b/README.md
@@ -311,7 +311,7 @@ To use the default size value (2MB) if the 1st argument `sz` equals 0. After som
 
 * `final_valid_sz >= 4096`
 * `final_valid_sz >= sz`
-* `final_valid_sz % page_size == 0 if the guard_page_enabled == 0`
+* `final_valid_sz % page_size == 0 if the guard_page_enabled != 0`
 
 And as close to the value of `sz` as possible.
 
diff --git a/README_zh.md b/README_zh.md
index a538d58..9457438 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -297,7 +297,7 @@ aco_share_stack_t* aco_share_stack_new2(size_t sz, char guard_page_enabled);
 
 * `final_valid_sz >= 4096`
 * `final_valid_sz >= sz`
-* `final_valid_sz % page_size == 0 if the guard_page_enabled == 0`
+* `final_valid_sz % page_size == 0 if the guard_page_enabled != 0`
 
 并且尽可能的接近入参`sz`的值。