diff --git a/build.rs b/build.rs
index 924b771..b429b6c 100644
--- a/build.rs
+++ b/build.rs
@@ -13,6 +13,7 @@ fn main() {
 
     // get the out dir of dependcy `cortex-m`
     //
-    println!("cargo:include=./includes") // provide DEP_U5_INCLUDE var
+    // println!("cargo:include=/includes") // provide DEP_U5_INCLUDE var
+    println!("cargo:include={}/include", dst.to_str().unwrap());
 
 }