diff --git a/src/manage/Compiler.ts b/src/manage/Compiler.ts
index dc6b0c8..a1daa4f 100644
--- a/src/manage/Compiler.ts
+++ b/src/manage/Compiler.ts
@@ -124,7 +124,7 @@ export class WatCompiler extends Compiler {
         return new Promise<CompileOutput>((resolve, reject) => {
             const command = `${this.wabt}/wasm-objdump -x -m ${output.file}`;
 
-            const compile = exec(command, (error: ExecException | null, stdout: string, stderr: any) => {
+            const compile = exec(command, (error: ExecException | null, stdout: string) => {
                 output.map = this.parseWasmObjDump(output, stdout.toString());
                 this.emit(CompilationEvents.sourcemap);
                 resolve(output);