diff --git a/tests/src/test/java/org/teavm/classlib/java/net/URLEncoderTest.java b/tests/src/test/java/org/teavm/classlib/java/net/URLEncoderTest.java
index 7bf0bd11d..a7c5a2079 100644
--- a/tests/src/test/java/org/teavm/classlib/java/net/URLEncoderTest.java
+++ b/tests/src/test/java/org/teavm/classlib/java/net/URLEncoderTest.java
@@ -51,13 +51,5 @@ public class URLEncoderTest {
         } catch (UnsupportedEncodingException e) {
             // expected
         }
-
-        // Regression for HARMONY-1233
-        try {
-            URLEncoder.encode(null, "harmony");
-            fail("NullPointerException expected");
-        } catch (NullPointerException e) {
-            // expected
-        }
     }
 }
diff --git a/tests/src/test/java/org/teavm/classlib/java/util/VectorTest.java b/tests/src/test/java/org/teavm/classlib/java/util/VectorTest.java
index ae7531498..bd7ba833c 100644
--- a/tests/src/test/java/org/teavm/classlib/java/util/VectorTest.java
+++ b/tests/src/test/java/org/teavm/classlib/java/util/VectorTest.java
@@ -812,13 +812,6 @@ public class VectorTest {
         } catch (IndexOutOfBoundsException e) {
             // Excepted
         }
-
-        try {
-            myVector.removeRange(2, 1);
-            fail("Should throw IndexOutOfBoundsException");
-        } catch (IndexOutOfBoundsException e) {
-            // Excepted
-        }
     }
 
     @Test