diff --git a/core/src/main/resources/org/teavm/backend/javascript/runtime.js b/core/src/main/resources/org/teavm/backend/javascript/runtime.js
index 68ff3c7e3..943134bec 100644
--- a/core/src/main/resources/org/teavm/backend/javascript/runtime.js
+++ b/core/src/main/resources/org/teavm/backend/javascript/runtime.js
@@ -650,7 +650,7 @@ if (typeof Reflect === 'object') {
             value: JavaError
         },
         message: {
-            get: () => {
+            get() {
                 try {
                     let javaException = this[$rt_javaExceptionProp];
                     if (typeof javaException === 'object') {
diff --git a/tools/junit/src/main/java/org/teavm/junit/TestJsEntryPoint.java b/tools/junit/src/main/java/org/teavm/junit/TestJsEntryPoint.java
index 6b3c8eb0d..156d66f3e 100644
--- a/tools/junit/src/main/java/org/teavm/junit/TestJsEntryPoint.java
+++ b/tools/junit/src/main/java/org/teavm/junit/TestJsEntryPoint.java
@@ -52,6 +52,6 @@ final class TestJsEntryPoint {
         }
     }
 
-    @JSBody(params = "e", script = "teavmException = e")
+    @JSBody(params = "e", script = "window.teavmException = e")
     private static native void saveJavaException(String e);
 }