diff --git a/core/src/main/kotlin/com/bridge/ouroboros/compose/ExecutableEffect.kt b/core/src/main/kotlin/com/bridge/ouroboros/compose/ExecutableEffect.kt
index 5db06f3..3bdc019 100644
--- a/core/src/main/kotlin/com/bridge/ouroboros/compose/ExecutableEffect.kt
+++ b/core/src/main/kotlin/com/bridge/ouroboros/compose/ExecutableEffect.kt
@@ -3,20 +3,16 @@ package com.bridge.ouroboros.compose
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
 import kotlin.coroutines.CoroutineContext
 
 abstract class ExecutableEffect<EVENT, EFFECT_STATE> : CoroutineScope {
 
-    private val job = SupervisorJob()
-
     private var currentContext: CoroutineContext? = null
 
     override val coroutineContext: CoroutineContext
-        get() {
-            checkNotNull(currentContext) { "coroutineContext must be attached before invoking perform" }
-            return job + defaultDispatcher
-        }
+        get() = currentContext?.let { it + defaultDispatcher }
+            ?: error("coroutineContext must be attached before invoking perform")
 
     abstract fun EFFECT_STATE.perform(emit: EventConsumer<EVENT>)
 
@@ -35,7 +31,7 @@ abstract class ExecutableEffect<EVENT, EFFECT_STATE> : CoroutineScope {
 
     companion object {
         @Volatile
-        private var defaultDispatcher: CoroutineDispatcher = Dispatchers.Main
+        private var defaultDispatcher: CoroutineDispatcher = Dispatchers.Default
 
         fun setDefaultDispatcher(dispatcher: CoroutineDispatcher) {
             defaultDispatcher = dispatcher
diff --git a/example-app/build.gradle b/example-app/build.gradle
index ea7bec9..bc85653 100644
--- a/example-app/build.gradle
+++ b/example-app/build.gradle
@@ -87,7 +87,10 @@ dependencies {
     implementation Libs.material
 
     testImplementation Libs.junit
-    testImplementation Libs.Kotest.assertions
+    testImplementation (Libs.Kotest.assertions){
+        exclude group: 'org.jetbrains.kotlin'
+    }
+
     testImplementation Libs.MockK.library
     testImplementation project(':test')
 
diff --git a/test/build.gradle b/test/build.gradle
index 5df18e4..c8a42c7 100644
--- a/test/build.gradle
+++ b/test/build.gradle
@@ -45,7 +45,9 @@ android {
 
 dependencies {
     api project(':core')
-    implementation 'io.kotest:kotest-assertions-core:5.6.0'
+    implementation (Libs.Kotest.assertions){
+        exclude group: 'org.jetbrains.kotlin'
+    }
 }
 
 afterEvaluate {