diff --git a/src/class/Util.ts b/src/class/Util.ts
index 851337d..d4fece4 100644
--- a/src/class/Util.ts
+++ b/src/class/Util.ts
@@ -1,5 +1,5 @@
 /* eslint-disable no-param-reassign */
-import { promisify } from 'util';
+import { promisify, inspect } from 'util';
 import childProcess from 'child_process';
 import nodemailer from 'nodemailer';
 import { Message, PrivateChannel, GroupChannel, Member, User } from 'eris';
@@ -33,10 +33,8 @@ export default class Util {
    */
   public async exec(command: string, options: childProcess.ExecOptions = {}): Promise<string> {
     return new Promise((res, rej) => {
-      let error = false;
       let output = '';
       const writeFunction = (data: string|Buffer|Error) => {
-        if (data instanceof Error) error = true;
         output += `${data}`;
       };
       const cmd = childProcess.exec(command, options);
@@ -44,10 +42,11 @@ export default class Util {
       cmd.stderr.on('data', writeFunction);
       cmd.on('error', writeFunction);
       cmd.once('close', (code, signal) => {
-        cmd.stdout.removeListener('data', writeFunction);
-        cmd.stderr.removeListener('data', writeFunction);
-        cmd.removeListener('error', writeFunction);
-        if (error) rej(output);
+        cmd.stdout.off('data', writeFunction);
+        cmd.stderr.off('data', writeFunction);
+        cmd.off('error', writeFunction);
+        setTimeout(() => {}, 1000);
+        if (code !== 0) rej(new Error(`Command failed: ${command}\n${output}`));
         res(output);
       });
     });
diff --git a/src/commands/pull.ts b/src/commands/pull.ts
index 7639315..9a4c8f5 100644
--- a/src/commands/pull.ts
+++ b/src/commands/pull.ts
@@ -61,7 +61,7 @@ export default class Pull extends Command {
         updatedPackages = await updateMessage.edit(updatedMessage);
       } else {
         const updatedMessage = passedPull.content.replace(`${this.client.stores.emojis.loading} ***Reinstalling dependencies...***`, `${this.client.stores.emojis.error} ***Unexpected yarn install output***\n`
-          + `\`\`\`\n${pull}\n\`\`\``);
+          + `\`\`\`\n${install}\n\`\`\``);
         this.client.updating = false;
         return updateMessage.edit(updatedMessage);
       }