diff --git a/api/src/index.js b/api/src/index.js
index cd658c5..ba234fe 100644
--- a/api/src/index.js
+++ b/api/src/index.js
@@ -49,10 +49,10 @@ app.post(
                 language.aliases.includes(req.body.language.toLowerCase())
             );
 
-            const { stdout, stderr, output } = await execute(language, req.body.source, req.body.args);
+            const { stdout, stderr, output, ran } = await execute(language, req.body.source, req.body.args);
 
             res.status(200).json({
-                ran: true,
+                ran,
                 language: language.name,
                 version: language.version,
                 stdout,
diff --git a/shared/execute.js b/shared/execute.js
index 22c6dad..ed612bf 100644
--- a/shared/execute.js
+++ b/shared/execute.js
@@ -28,12 +28,17 @@ function execute(language, source, args) {
             output += chunk;
         });
         
-        process.on('exit', () => {
+        process.on('exit', code => {
             stderr = stderr.trim().substring(0, 65535);
             stdout = stdout.trim().substring(0, 65535);
             output = output.trim().substring(0, 65535);
 
-            resolve({ stdout, stderr, output });
+            resolve({
+                stdout,
+                stderr,
+                output,
+                ran: code === 0,
+            });
         });
     });
 }