diff --git a/concourse/tasks/build-theia-package.sh b/concourse/tasks/build-theia-package.sh
index e1d8fcdc6..368545633 100755
--- a/concourse/tasks/build-theia-package.sh
+++ b/concourse/tasks/build-theia-package.sh
@@ -41,7 +41,8 @@ echo -e "\n\n*Version: ${qualified_version}*" >> README.md
 cd "$sources"
 ./build.sh
 cd "$ext_folder"
-yarn pack
+tar_file=$extension_id-v$qualified_version.tgz
+yarn pack $tar_file
 
-cp pivotal-tools-$extension_id-v$qualified_version.tgz $workdir/out/$extension_id-v$qualified_version.tgz
+cp $tarfile $workdir/out
 
diff --git a/theia-extensions/test-theia-package.sh b/theia-extensions/test-theia-package.sh
index 2b7aa6107..e3f69dd3c 100755
--- a/theia-extensions/test-theia-package.sh
+++ b/theia-extensions/test-theia-package.sh
@@ -21,7 +21,7 @@ fi
 mkdir $test_dir
 cd $test_dir
 
-echo "Generating 'pacjage.json' file..."
+echo "Generating 'package.json' file..."
 
 cat > package.json << EOF
 {
@@ -58,7 +58,6 @@ cat > package.json << EOF
 EOF
 
 echo "Installing NPM packages..."
-yarn
 yarn add $package_tarball
 
 echo "Launching Theia browser app..."