diff --git a/compiler/fir/modularized-tests/tests/org/jetbrains/kotlin/fir/FirResolveModularizedTotalKotlinTest.kt b/compiler/fir/modularized-tests/tests/org/jetbrains/kotlin/fir/FirResolveModularizedTotalKotlinTest.kt
index 38cd53d6472..7067008f25e 100644
--- a/compiler/fir/modularized-tests/tests/org/jetbrains/kotlin/fir/FirResolveModularizedTotalKotlinTest.kt
+++ b/compiler/fir/modularized-tests/tests/org/jetbrains/kotlin/fir/FirResolveModularizedTotalKotlinTest.kt
@@ -54,7 +54,7 @@ internal val PASSES = System.getProperty("fir.bench.passes")?.toInt() ?: 3
 internal val SEPARATE_PASS_DUMP = System.getProperty("fir.bench.dump.separate_pass", "false").toBooleanLenient()!!
 private val APPEND_ERROR_REPORTS = System.getProperty("fir.bench.report.errors.append", "false").toBooleanLenient()!!
 private val RUN_CHECKERS = System.getProperty("fir.bench.run.checkers", "false").toBooleanLenient()!!
-private val USE_LIGHT_TREE = System.getProperty("fir.bench.use.light.tree", "false").toBooleanLenient()!!
+private val USE_LIGHT_TREE = System.getProperty("fir.bench.use.light.tree", "true").toBooleanLenient()!!
 private val DUMP_MEMORY = System.getProperty("fir.bench.dump.memory", "false").toBooleanLenient()!!
 
 private val REPORT_PASS_EVENTS = System.getProperty("fir.bench.report.pass.events", "false").toBooleanLenient()!!