diff --git a/crates/cli-support/src/lib.rs b/crates/cli-support/src/lib.rs
index 0060fd925..271bd6fd5 100644
--- a/crates/cli-support/src/lib.rs
+++ b/crates/cli-support/src/lib.rs
@@ -148,7 +148,8 @@ impl Bindgen {
         }
 
         shim.push_str(&format!("
-            const bytes = require('fs').readFileSync('{}');
+            const join = require('path').join;
+            const bytes = require('fs').readFileSync(join(__dirname, '{}'));
             const wasmModule = new WebAssembly.Module(bytes);
             const wasmInstance = new WebAssembly.Instance(wasmModule, imports);
             module.exports = wasmInstance.exports;