diff --git a/codebuild/spec/buildspec_generalbatch.yml b/codebuild/spec/buildspec_generalbatch.yml
index f1c59c75799..d1e6bc6b5fe 100644
--- a/codebuild/spec/buildspec_generalbatch.yml
+++ b/codebuild/spec/buildspec_generalbatch.yml
@@ -356,14 +356,13 @@ batch:
     - identifier: ktls
       buildspec: codebuild/spec/buildspec_ktls.yml
       env:
-        debug-session: true
-        compute-type: BUILD_GENERAL1_XLARGE
+        compute-type: BUILD_GENERAL1_LARGE
         image: aws/codebuild/standard:7.0
         privileged-mode: true
     - identifier: ktlsASAN
       buildspec: codebuild/spec/buildspec_ktls.yml
       env:
-        compute-type: BUILD_GENERAL1_XLARGE
+        compute-type: BUILD_GENERAL1_LARGE
         image: aws/codebuild/standard:7.0
         privileged-mode: true
         variables:
diff --git a/codebuild/spec/buildspec_ktls.yml b/codebuild/spec/buildspec_ktls.yml
index 82e3c390fd9..9ef592fa39e 100644
--- a/codebuild/spec/buildspec_ktls.yml
+++ b/codebuild/spec/buildspec_ktls.yml
@@ -9,7 +9,7 @@ phases:
   pre_build:
     commands:
       - aws s3 --quiet sync s3://s2n-ktls-testing ./qemu
-      - cd qemu; bash ./runbig.sh; cd ..
+      - cd qemu; bash ./run.sh; cd ..
       - rsync -avz --exclude=qemu --exclude=tests/fuzz -e 'ssh -p 2222' . codebuild@localhost:/home/codebuild/s2n-tls
   build:
     commands: