diff --git a/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt b/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt
index 2b913dd9d5..658794141a 100644
--- a/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt
+++ b/utbot-junit-contest/src/main/kotlin/org/utbot/contest/Contest.kt
@@ -170,6 +170,7 @@ fun setOptions() {
     UtSettings.testMinimizationStrategyType = TestSelectionStrategyType.COVERAGE_STRATEGY
     UtSettings.ignoreStringLiterals = true
     UtSettings.maximizeCoverageUsingReflection = true
+    UtSettings.useSandbox = false
 }