diff --git a/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/Lambdas.java b/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/Lambdas.java
index 69e9a78..2352efd 100644
--- a/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/Lambdas.java
+++ b/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/Lambdas.java
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+package lambdas_jstyle_trivial;
+
 public class Lambdas {
   public interface IntConsumer {
     void put(int value);
diff --git a/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/inner.kt b/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/inner/inner.kt
similarity index 85%
rename from src/test/kotlinR8TestResources/lambdas_jstyle_trivial/inner.kt
rename to src/test/kotlinR8TestResources/lambdas_jstyle_trivial/inner/inner.kt
index 5da8884..b0afcc3 100644
--- a/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/inner.kt
+++ b/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/inner/inner.kt
@@ -2,11 +2,11 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-package lambdas.jstyle.trivial.inner
+package lambdas_jstyle_trivial.inner
 
-import Lambdas
-import lambdas.jstyle.trivial.next
-import lambdas.jstyle.trivial.nextInt
+import lambdas_jstyle_trivial.Lambdas
+import lambdas_jstyle_trivial.next
+import lambdas_jstyle_trivial.nextInt
 
 fun testInner() {
     testInner1(nextInt(), nextInt(), nextInt(), nextInt())
diff --git a/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/main.kt b/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/main.kt
index 39673af..6cdae60 100644
--- a/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/main.kt
+++ b/src/test/kotlinR8TestResources/lambdas_jstyle_trivial/main.kt
@@ -2,10 +2,10 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-package lambdas.jstyle.trivial
+package lambdas_jstyle_trivial
 
-import Lambdas
-import lambdas.jstyle.trivial.inner.testInner
+import lambdas_jstyle_trivial.Lambdas
+import lambdas_jstyle_trivial.inner.testInner
 
 private var COUNT = 0
 
diff --git a/src/test/kotlinR8TestResources/lambdas_kstyle_captures/main.kt b/src/test/kotlinR8TestResources/lambdas_kstyle_captures/main.kt
index 3ee0bf8..62727bd 100644
--- a/src/test/kotlinR8TestResources/lambdas_kstyle_captures/main.kt
+++ b/src/test/kotlinR8TestResources/lambdas_kstyle_captures/main.kt
@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-package lambdas.kstyle.captures
+package lambdas_kstyle_captures
 
 fun consume(l: () -> String) = l()
 
diff --git a/src/test/kotlinR8TestResources/lambdas_kstyle_generics/main.kt b/src/test/kotlinR8TestResources/lambdas_kstyle_generics/main.kt
index 7fb22eb..e2d044d 100644
--- a/src/test/kotlinR8TestResources/lambdas_kstyle_generics/main.kt
+++ b/src/test/kotlinR8TestResources/lambdas_kstyle_generics/main.kt
@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-package lambdas.kstyle.generics
+package lambdas_kstyle_generics
 
 private var COUNT = 11
 
diff --git a/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/inner.kt b/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/inner/inner.kt
similarity index 79%
rename from src/test/kotlinR8TestResources/lambdas_kstyle_trivial/inner.kt
rename to src/test/kotlinR8TestResources/lambdas_kstyle_trivial/inner/inner.kt
index 00587a9..c22a3b8 100644
--- a/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/inner.kt
+++ b/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/inner/inner.kt
@@ -2,11 +2,11 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-package lambdas.kstyle.trivial.inner
+package lambdas_kstyle_trivial.inner
 
-import lambdas.kstyle.trivial.consumeEmpty
-import lambdas.kstyle.trivial.consumeOne
-import lambdas.kstyle.trivial.consumeTwo
+import lambdas_kstyle_trivial.consumeEmpty
+import lambdas_kstyle_trivial.consumeOne
+import lambdas_kstyle_trivial.consumeTwo
 
 fun testInner() {
     testInnerStateless()
diff --git a/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/main.kt b/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/main.kt
index 34ba194..42cce37 100644
--- a/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/main.kt
+++ b/src/test/kotlinR8TestResources/lambdas_kstyle_trivial/main.kt
@@ -2,9 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-package lambdas.kstyle.trivial
+package lambdas_kstyle_trivial
 
-import lambdas.kstyle.trivial.inner.testInner
+import lambdas_kstyle_trivial.inner.testInner
 
 private var COUNT = 11
 
diff --git a/src/test/kotlinR8TestResources/lambdas_singleton/main.kt b/src/test/kotlinR8TestResources/lambdas_singleton/main.kt
index 8e34a0c..f06904a 100644
--- a/src/test/kotlinR8TestResources/lambdas_singleton/main.kt
+++ b/src/test/kotlinR8TestResources/lambdas_singleton/main.kt
@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-package lambdas.singleton
+package lambdas_singleton
 
 private var COUNT = 0