diff --git a/platform/whatsNew/BUILD.bazel b/platform/whatsNew/BUILD.bazel
index 387b92aeeb32..623906193894 100644
--- a/platform/whatsNew/BUILD.bazel
+++ b/platform/whatsNew/BUILD.bazel
@@ -16,6 +16,12 @@ resourcegroup(
   strip_prefix = "resources"
 )
 
+resourcegroup(
+  name = "whatsNew_test_resources",
+  srcs = glob(["testResources/**/*"]),
+  strip_prefix = "testResources"
+)
+
 jvm_library(
   name = "whatsNew",
   module_name = "intellij.platform.whatsNew",
@@ -48,6 +54,7 @@ jvm_library(
   name = "whatsNew_test_lib",
   visibility = ["//visibility:public"],
   srcs = glob(["testSrc/**/*.kt", "testSrc/**/*.java", "testSrc/**/*.form"], allow_empty = True),
+  resources = [":whatsNew_test_resources"],
   kotlinc_opts = ":custom_whatsNew",
   associates = [":whatsNew"],
   deps = [
diff --git a/platform/whatsNew/intellij.platform.whatsNew.iml b/platform/whatsNew/intellij.platform.whatsNew.iml
index 2641cca98c4b..2a381edd37e7 100644
--- a/platform/whatsNew/intellij.platform.whatsNew.iml
+++ b/platform/whatsNew/intellij.platform.whatsNew.iml
@@ -27,6 +27,7 @@
       <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/testSrc" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/testResources" type="java-test-resource" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
diff --git a/platform/whatsNew/src/com/intellij/platform/whatsNew/WhatsNewInVisionContentProvider.kt b/platform/whatsNew/src/com/intellij/platform/whatsNew/WhatsNewInVisionContentProvider.kt
index bba81a50ac93..2efb1d9010e6 100644
--- a/platform/whatsNew/src/com/intellij/platform/whatsNew/WhatsNewInVisionContentProvider.kt
+++ b/platform/whatsNew/src/com/intellij/platform/whatsNew/WhatsNewInVisionContentProvider.kt
@@ -133,9 +133,9 @@ class ResourceContentSource(private val classLoader: ClassLoader, private val re
   constructor(classLoader: ClassLoader, resourceName: String) : this(classLoader, listOf(resourceName))
 
   override suspend fun openStream(): InputStream? = withContext(Dispatchers.IO) {
-    resourceNames.asSequence().map {
+    resourceNames.firstNotNullOfOrNull {
       classLoader.getResourceAsStream(it)
-    }.firstOrNull()
+    }
   }
   override suspend fun checkAvailability(): Boolean = withContext(Dispatchers.IO) {
     resourceNames.any { classLoader.getResource(it) != null }
diff --git a/platform/whatsNew/testResources/com/intellij/platform/whatsNew/idea/eap/vision.json b/platform/whatsNew/testResources/com/intellij/platform/whatsNew/idea/eap/vision.json
new file mode 100644
index 000000000000..9e26dfeeb6e6
--- /dev/null
+++ b/platform/whatsNew/testResources/com/intellij/platform/whatsNew/idea/eap/vision.json
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git a/platform/whatsNew/testSrc/com/intellij/platform/whatsNew/WhatsNewVisionContentProviderTest.kt b/platform/whatsNew/testSrc/com/intellij/platform/whatsNew/WhatsNewVisionContentProviderTest.kt
new file mode 100644
index 000000000000..c7bf42a7fcb9
--- /dev/null
+++ b/platform/whatsNew/testSrc/com/intellij/platform/whatsNew/WhatsNewVisionContentProviderTest.kt
@@ -0,0 +1,26 @@
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package com.intellij.platform.whatsNew
+
+import com.intellij.testFramework.junit5.TestApplication
+import kotlinx.coroutines.runBlocking
+import org.junit.jupiter.api.Assertions
+import org.junit.jupiter.api.Test
+
+@TestApplication
+class WhatsNewVisionContentProviderTest {
+  // IJPL-217529
+  @Test
+  fun testLegacyResourceNaming() {
+    val provider = object : WhatsNewInVisionContentProvider() {
+      fun extractResourceNames() = getVisionJsonResourceNames()
+    }
+    
+    val resourceNames = provider.extractResourceNames()
+    
+    val contentSource = ResourceContentSource(this::class.java.classLoader, resourceNames)
+    runBlocking {
+      Assertions.assertTrue(contentSource.checkAvailability(), "Resource availability check failed")
+      Assertions.assertTrue(contentSource.openStream() != null, "Resource stream opening failed")
+    }
+  }
+}
\ No newline at end of file