diff --git a/Cargo.toml b/Cargo.toml
index 0eb5f81..fc2a93b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ license = "MIT/Apache-2.0"
 [features]
 default = []
 embassy = ["dep:embassy-time"]
+ble = []
 
 [dependencies]
 #ch58x = { version = "0.2.0", path = "../ch32-rs-nightlies/ch58x", features = [
diff --git a/build.rs b/build.rs
index fa630c5..03c2184 100644
--- a/build.rs
+++ b/build.rs
@@ -6,7 +6,9 @@ fn main() {
 
     fs::write(out_dir.join("libISP583.a"), include_bytes!("vendor/libISP583.a")).unwrap();
 
-    fs::write(out_dir.join("libCH58xBLE.a"), include_bytes!("vendor/LIBCH58xBLE.a")).unwrap();
+    if env::var("CARGO_FEATURE_BLE").is_ok() {
+        fs::write(out_dir.join("libCH58xBLE.a"), include_bytes!("vendor/LIBCH58xBLE.a")).unwrap();
+    }
 
     // Put the linker script somewhere the linker can find it.
     fs::write(out_dir.join("link.x"), include_bytes!("link.x")).unwrap();