diff --git a/dbms/tests/clickhouse-test-server b/dbms/tests/clickhouse-test-server
index 37c5999fd9d..1cf2fea62d8 100755
--- a/dbms/tests/clickhouse-test-server
+++ b/dbms/tests/clickhouse-test-server
@@ -75,7 +75,7 @@ $GDB ${BIN_DIR}clickhouse-server --config-file=$CLICKHOUSE_CONFIG -- \
     $INTERNAL_COMPILER_PARAMS \
     > $LOG_DIR/stdout 2>&1 &
 CH_PID=$!
-sleep 3
+sleep ${TEST_SERVER_STARTUP_WAIT:=5}
 
 if [ "$GDB" ]; then
     # Long symbols read
diff --git a/debian/pbuilder-hooks/B90test-server b/debian/pbuilder-hooks/B90test-server
index c4524a6ef6f..6ed2d593fa5 100755
--- a/debian/pbuilder-hooks/B90test-server
+++ b/debian/pbuilder-hooks/B90test-server
@@ -66,7 +66,7 @@ if [ "${TEST_CONNECT}" ]; then
     trap finish EXIT SIGINT SIGQUIT SIGTERM
 
     service clickhouse-server start
-    sleep 3
+    sleep {TEST_SERVER_STARTUP_WAIT:=5}
 
     # TODO: remove me or make only on error:
     tail -n100 /var/log/clickhouse-server/*.log /var/log/clickhouse-server/stderr || true