diff --git a/README.md b/README.md
index 027bd9ed..ebce1fe3 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,7 @@ To compile it with your project, these flags must be set:
 
 + `--std=c++17` flag must be set
 + Exception must be enabled
++ For MSVC, `/utf-8` flag must be set
 
 For development build on Linux, use this snippet.
 ```bash
diff --git a/docs/quick-start/installation.md b/docs/quick-start/installation.md
index 4332c228..9a0f4f38 100644
--- a/docs/quick-start/installation.md
+++ b/docs/quick-start/installation.md
@@ -43,6 +43,7 @@ To compile it with your project, these flags must be set:
 
 + `--std=c++17` flag must be set
 + Exception must be enabled
++ For MSVC, `/utf-8` flag must be set
 
 For emscripten, you must enable exceptions to make pocketpy work properly.
 See https://emscripten.org/docs/porting/exceptions.html.