diff --git a/ci/run_test.sh b/ci/run_test.sh
index 7bfa21b883..a924557972 100755
--- a/ci/run_test.sh
+++ b/ci/run_test.sh
@@ -19,6 +19,7 @@ else
   BUILD_UI_OPT=${WITHOUT_BUILD_UI}
 fi
 
+# It's enough to build UI either with H2 or PostgreSQL not with the both
 "${BASEDIR}/run_test_h2.sh" ${WITHOUT_BUILD_UI}
 "${BASEDIR}/run_test_pg.sh" ${BUILD_UI_OPT}