diff --git a/compiler/noirc_frontend/build.rs b/compiler/noirc_frontend/build.rs
deleted file mode 100644
index 53ae9489168..00000000000
--- a/compiler/noirc_frontend/build.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-use std::path::PathBuf;
-
-const BLNS_JSON_PATH: &str = "BLNS_JSON_PATH";
-
-fn main() -> Result<(), String> {
-    let out_dir = std::env::var("OUT_DIR").unwrap();
-
-    let dest_path = PathBuf::from(out_dir.clone()).join("blns.base64.json");
-    let dest_path_str = dest_path.to_str().unwrap();
-
-    println!("cargo:rustc-env={BLNS_JSON_PATH}={dest_path_str}");
-    std::fs::copy("./src/blns/blns.base64.json", dest_path).unwrap();
-
-    Ok(())
-}
diff --git a/compiler/noirc_frontend/src/blns/LICENSE b/compiler/noirc_frontend/src/lexer/blns/LICENSE
similarity index 100%
rename from compiler/noirc_frontend/src/blns/LICENSE
rename to compiler/noirc_frontend/src/lexer/blns/LICENSE
diff --git a/compiler/noirc_frontend/src/blns/README.md b/compiler/noirc_frontend/src/lexer/blns/README.md
similarity index 100%
rename from compiler/noirc_frontend/src/blns/README.md
rename to compiler/noirc_frontend/src/lexer/blns/README.md
diff --git a/compiler/noirc_frontend/src/blns/blns.base64.json b/compiler/noirc_frontend/src/lexer/blns/blns.base64.json
similarity index 100%
rename from compiler/noirc_frontend/src/blns/blns.base64.json
rename to compiler/noirc_frontend/src/lexer/blns/blns.base64.json
diff --git a/compiler/noirc_frontend/src/lexer/lexer.rs b/compiler/noirc_frontend/src/lexer/lexer.rs
index cb21f58e58b..265b9e4b5a3 100644
--- a/compiler/noirc_frontend/src/lexer/lexer.rs
+++ b/compiler/noirc_frontend/src/lexer/lexer.rs
@@ -1160,7 +1160,7 @@ mod tests {
     fn test_big_list_of_naughty_strings() {
         use std::mem::discriminant;
 
-        let blns_contents = include_str!(env!("BLNS_JSON_PATH"));
+        let blns_contents = include_str!("./blns/blns.base64.json");
         let blns_base64: Vec<String> =
             serde_json::from_str(blns_contents).expect("BLNS json invalid");
         for blns_base64_str in blns_base64 {