diff --git a/.teamcity/scripts/service_tests/acceptance_tests.sh b/.teamcity/scripts/service_tests/acceptance_tests.sh
index 5744146ff1b9..e8a14f220b11 100644
--- a/.teamcity/scripts/service_tests/acceptance_tests.sh
+++ b/.teamcity/scripts/service_tests/acceptance_tests.sh
@@ -2,7 +2,11 @@
 
 set -euo pipefail
 
-TEST_LIST=$(./test-binary -test.list="%TEST_PATTERN%" 2>/dev/null | grep -vE "%TEST_EXCLUDE_PATTERN%")
+TEST_LIST=$(./test-binary -test.list="%TEST_PATTERN%" 2>/dev/null)
+
+if [[ -n "%TEST_EXCLUDE_PATTERN%" ]]; then
+  TEST_LIST=$(echo "${TEST_LIST}" | grep -vE "%TEST_EXCLUDE_PATTERN%")
+fi
 
 read -r -a split <<<"${TEST_LIST}"
 TEST_COUNT=${#split[@]}