diff --git a/src/frontends/android/app/build.gradle b/src/frontends/android/app/build.gradle
index e2ebaae7a..23cdecb4a 100644
--- a/src/frontends/android/app/build.gradle
+++ b/src/frontends/android/app/build.gradle
@@ -51,4 +51,8 @@ dependencies {
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'com.google.android.material:material:1.0.0'
     testImplementation 'junit:junit:4.12'
+    testImplementation 'org.mockito:mockito-core:2.28.2'
+    testImplementation 'org.powermock:powermock-core:2.0.2'
+    testImplementation 'org.powermock:powermock-module-junit4:2.0.2'
+    testImplementation 'org.powermock:powermock-api-mockito2:2.0.2'
 }
diff --git a/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeSetTest.java b/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeSetTest.java
index af60c15ba..2e6d8a40a 100644
--- a/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeSetTest.java
+++ b/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeSetTest.java
@@ -15,19 +15,37 @@
 
 package org.strongswan.android.test;
 
+import org.junit.Before;
 import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.powermock.api.mockito.PowerMockito;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
 import org.strongswan.android.utils.IPRange;
 import org.strongswan.android.utils.IPRangeSet;
+import org.strongswan.android.utils.Utils;
 
+import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
 import static org.junit.Assert.assertEquals;
+import static org.mockito.ArgumentMatchers.anyString;
 
+@RunWith(PowerMockRunner.class)
+@PrepareForTest({ Utils.class, IPRangeSet.class })
 public class IPRangeSetTest
 {
+	@Before
+	public void initUtils() throws UnknownHostException
+	{
+		PowerMockito.mockStatic(Utils.class);
+		Mockito.when(Utils.parseInetAddress(anyString())).thenAnswer(invocation -> InetAddress.getByName(invocation.getArgument(0)));
+	}
+
 	private void assertSubnets(IPRangeSet set, IPRange...exp)
 	{
 		Iterator<IPRange> subnets = set.subnets().iterator();
diff --git a/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeTest.java b/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeTest.java
index 51e976e34..b171ba525 100644
--- a/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeTest.java
+++ b/src/frontends/android/app/src/test/java/org/strongswan/android/test/IPRangeTest.java
@@ -15,17 +15,34 @@
 
 package org.strongswan.android.test;
 
+import org.junit.Before;
 import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.powermock.api.mockito.PowerMockito;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
 import org.strongswan.android.utils.IPRange;
+import org.strongswan.android.utils.Utils;
 
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.util.List;
 
 import static org.junit.Assert.assertEquals;
+import static org.mockito.ArgumentMatchers.anyString;
 
+@RunWith(PowerMockRunner.class)
+@PrepareForTest({ Utils.class, IPRange.class })
 public class IPRangeTest
 {
+	@Before
+	public void initUtils() throws UnknownHostException
+	{
+		PowerMockito.mockStatic(Utils.class);
+		Mockito.when(Utils.parseInetAddress(anyString())).thenAnswer(invocation -> InetAddress.getByName(invocation.getArgument(0)));
+	}
+
 	@Test
 	public void testRangeReversed() throws UnknownHostException
 	{