diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/SubpluginsIT.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/SubpluginsIT.kt
index f077a4047f8..368201eb8a7 100644
--- a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/SubpluginsIT.kt
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/SubpluginsIT.kt
@@ -122,4 +122,13 @@ class SubpluginsIT : BaseGradleIT() {
             assertFileExists("${kotlinClassesDir("app", "main")}World_greet.class")
         }
     }
+
+    @Test
+    fun testAllOpenFromNestedBuildscript() {
+        Project("allOpenFromNestedBuildscript").build("build") {
+            assertSuccessful()
+            assertFileExists("${kotlinClassesDir(subproject = "a/b", sourceSet = "main")}MyClass.class")
+            assertFileExists("${kotlinClassesDir(subproject = "a/b", sourceSet = "test")}MyTestClass.class")
+        }
+    }
 }
\ No newline at end of file
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/build.gradle b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/build.gradle
new file mode 100644
index 00000000000..4676cfddfd8
--- /dev/null
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/build.gradle
@@ -0,0 +1,15 @@
+apply plugin: "kotlin"
+apply plugin: "kotlin-allopen"
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
+
+allOpen {
+    annotation("AllOpen")
+}
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+}
\ No newline at end of file
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/main/kotlin/MyClass.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/main/kotlin/MyClass.kt
new file mode 100644
index 00000000000..8f670a7ac8a
--- /dev/null
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/main/kotlin/MyClass.kt
@@ -0,0 +1,9 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+@AllOpen
+class MyClass {
+    fun f() = 0
+}
\ No newline at end of file
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/main/kotlin/annotations.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/main/kotlin/annotations.kt
new file mode 100644
index 00000000000..f3574cd70a0
--- /dev/null
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/main/kotlin/annotations.kt
@@ -0,0 +1,6 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+annotation class AllOpen
\ No newline at end of file
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/test/kotlin/MyTestClass.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/test/kotlin/MyTestClass.kt
new file mode 100644
index 00000000000..f55ab2b4d58
--- /dev/null
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/b/src/test/kotlin/MyTestClass.kt
@@ -0,0 +1,8 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+class MyTestClass : MyClass() {
+    override fun f() = 1
+}
\ No newline at end of file
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/build.gradle b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/build.gradle
new file mode 100644
index 00000000000..fdcddf269f4
--- /dev/null
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/a/build.gradle
@@ -0,0 +1,9 @@
+buildscript {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-allopen:$kotlin_version"
+    }
+}
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/build.gradle b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/build.gradle
new file mode 100644
index 00000000000..3d48437609e
--- /dev/null
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/build.gradle
@@ -0,0 +1,9 @@
+buildscript {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/settings.gradle b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/settings.gradle
new file mode 100644
index 00000000000..7580a1a7432
--- /dev/null
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/allOpenFromNestedBuildscript/settings.gradle
@@ -0,0 +1 @@
+include ':a', ':a:b'
\ No newline at end of file