diff --git a/.github/workflows/CheckMainFile.yml b/.github/workflows/CheckMainFile.yml
index 04dc63c..f391cef 100644
--- a/.github/workflows/CheckMainFile.yml
+++ b/.github/workflows/CheckMainFile.yml
@@ -8,11 +8,9 @@ jobs:
     - name: Check if CookieMonster.js is built correctly 
       run: |
         cat ./src/Header.js ./src/Cache.js ./src/Config.js ./src/Data.js ./src/Disp.js ./src/Main.js ./src/Sim.js ./src/Footer.js > CookieMonsterTest.js
-        if [ -n "$(cmp CookieMonster.js CookieMonsterTest.js)" ]
-        then
+        if cmp -s CookieMonster.js CookieMonsterTest.js; then
           echo '### SUCCESS: CookieMonster is correctly built! ###'
-          
         else
-          echo '### WARNING: CookieMonster.js does not seem to be correct. Have you compiled the source files into the final file using either of the combine files? ###' &
+          echo ### WARNING: CookieMonster.js does not seem to be correct. Have you compiled the source files into the final file using either of the combine files? ###
           exit 1
         fi