diff --git a/test/extended/core.sh b/test/extended/core.sh
index c254057e70f9..639ef87db448 100755
--- a/test/extended/core.sh
+++ b/test/extended/core.sh
@@ -12,7 +12,7 @@ source "${OS_ROOT}/test/extended/setup.sh"
 cd "${OS_ROOT}"
 
 os::test::extended::setup
-os::test::extended::focus $@
+os::test::extended::focus "$@"
 
 function join { local IFS="$1"; shift; echo "$*"; }
 
@@ -43,4 +43,4 @@ TEST_REPORT_FILE_NAME=core_parallel ${GINKGO} -v "-focus=${pf}" "-skip=${ps}" -p
 echo "[INFO] Running serial tests"
 TEST_REPORT_FILE_NAME=core_serial ${GINKGO} -v "-focus=${sf}" "-skip=${ss}" ${EXTENDEDTEST} -- -ginkgo.v -test.timeout 2h || exitstatus=$?
 
-exit $exitstatus
\ No newline at end of file
+exit $exitstatus