diff --git a/core/src/main/scala/org/apache/spark/resource/ResourceProfileManager.scala b/core/src/main/scala/org/apache/spark/resource/ResourceProfileManager.scala
index afbacb8013645..580a5b7bb07ac 100644
--- a/core/src/main/scala/org/apache/spark/resource/ResourceProfileManager.scala
+++ b/core/src/main/scala/org/apache/spark/resource/ResourceProfileManager.scala
@@ -45,11 +45,6 @@ private[spark] class ResourceProfileManager(sparkConf: SparkConf,
     (lock.readLock(), lock.writeLock())
   }
 
-  private val defaultProfile = ResourceProfile.getOrCreateDefaultProfile(sparkConf)
-  addResourceProfile(defaultProfile)
-
-  def defaultResourceProfile: ResourceProfile = defaultProfile
-
   private val dynamicEnabled = Utils.isDynamicAllocationEnabled(sparkConf)
   private val master = sparkConf.getOption("spark.master")
   private val isYarn = master.isDefined && master.get.equals("yarn")
@@ -60,12 +55,18 @@ private[spark] class ResourceProfileManager(sparkConf: SparkConf,
   private val notRunningUnitTests = !isTesting
   private val testExceptionThrown = sparkConf.get(RESOURCE_PROFILE_MANAGER_TESTING)
 
+  private val defaultProfile = ResourceProfile.getOrCreateDefaultProfile(sparkConf)
+  addResourceProfile(defaultProfile)
+
+  def defaultResourceProfile: ResourceProfile = defaultProfile
+
   /**
    * If we use anything except the default profile, it's supported on YARN, Kubernetes and
    * Standalone with dynamic allocation enabled, and task resource profile with dynamic allocation
    * disabled on Standalone. Throw an exception if not supported.
    */
   private[spark] def isSupported(rp: ResourceProfile): Boolean = {
+    assert(master != null)
     if (rp.isInstanceOf[TaskResourceProfile] && !dynamicEnabled) {
       if ((notRunningUnitTests || testExceptionThrown) &&
         !(isStandaloneOrLocalCluster || isYarn || isK8s)) {