diff --git a/libraries/stdlib/test/utils/DeepRecursiveTest.kt b/libraries/stdlib/test/utils/DeepRecursiveTest.kt
index 1372bdafa2c..50efacb03e3 100644
--- a/libraries/stdlib/test/utils/DeepRecursiveTest.kt
+++ b/libraries/stdlib/test/utils/DeepRecursiveTest.kt
@@ -39,7 +39,7 @@ class DeepRecursiveTest {
 
     @Test
     fun testDeepTreeOddEvenNodesMutual() {
-        val n = 100_000
+        val n = 50_000
         val dt = deepTree(n)
         val rec = MutualRec()
         assertEquals(n / 2, rec.even(dt))