diff --git a/kotlinx-coroutines-core/build.gradle b/kotlinx-coroutines-core/build.gradle
index f98f6a529c..29784bffcf 100644
--- a/kotlinx-coroutines-core/build.gradle
+++ b/kotlinx-coroutines-core/build.gradle
@@ -177,7 +177,9 @@ jvmTest {
     minHeapSize = '1g'
     maxHeapSize = '1g'
     enableAssertions = true
-    systemProperty 'java.security.manager', 'kotlinx.coroutines.TestSecurityManager'
+    if (!Idea.active) { // Workaround for KT-42671
+        systemProperty 'java.security.manager', 'kotlinx.coroutines.TestSecurityManager'
+    }
     // 'stress' is required to be able to run all subpackage tests like ":jvmTests --tests "*channels*" -Pstress=true"
     if (!Idea.active && rootProject.properties['stress'] == null) {
         exclude '**/*StressTest.*'