diff --git a/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudChannelExtractorTest.java b/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudChannelExtractorTest.java
index f7eb2cc7..a2632c22 100644
--- a/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudChannelExtractorTest.java
+++ b/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudChannelExtractorTest.java
@@ -47,7 +47,7 @@ public class SoundcloudChannelExtractorTest {
 
     @Test
     public void testGetStreams() throws Exception {
-        assertTrue("no streams are received", !extractor.getStreams().getItemList().isEmpty());
+        assertFalse("no streams are received", extractor.getStreams().getItemList().isEmpty());
     }
 
     @Test
diff --git a/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudStreamExtractorDefaultTest.java b/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudStreamExtractorDefaultTest.java
index fe23298b..52af87eb 100644
--- a/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudStreamExtractorDefaultTest.java
+++ b/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudStreamExtractorDefaultTest.java
@@ -23,12 +23,12 @@ import static org.schabi.newpipe.extractor.ServiceList.SoundCloud;
  * Test for {@link StreamExtractor}
  */
 public class SoundcloudStreamExtractorDefaultTest {
-    private StreamExtractor extractor;
+    private SoundcloudStreamExtractor extractor;
 
     @Before
     public void setUp() throws Exception {
         NewPipe.init(Downloader.getInstance());
-        extractor = SoundCloud.getService().getStreamExtractor("https://soundcloud.com/liluzivert/do-what-i-want-produced-by-maaly-raw-don-cannon");
+        extractor = (SoundcloudStreamExtractor) SoundCloud.getService().getStreamExtractor("https://soundcloud.com/liluzivert/do-what-i-want-produced-by-maaly-raw-don-cannon");
     }
 
     @Test
@@ -91,7 +91,7 @@ public class SoundcloudStreamExtractorDefaultTest {
 
     @Test
     public void testGetAudioStreams() throws IOException, ExtractionException {
-        assertTrue(!extractor.getAudioStreams().isEmpty());
+        assertFalse(extractor.getAudioStreams().isEmpty());
     }
 
     @Test
diff --git a/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamExtractorDefaultTest.java b/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamExtractorDefaultTest.java
index c5d66f4b..df10c76a 100644
--- a/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamExtractorDefaultTest.java
+++ b/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamExtractorDefaultTest.java
@@ -62,7 +62,7 @@ public class YoutubeStreamExtractorDefaultTest {
 
     @Test
     public void testGetTitle() throws ParsingException {
-        assertTrue(!extractor.getName().isEmpty());
+        assertFalse(extractor.getName().isEmpty());
     }
 
     @Test
@@ -113,7 +113,7 @@ public class YoutubeStreamExtractorDefaultTest {
 
     @Test
     public void testGetAudioStreams() throws IOException, ExtractionException {
-        assertTrue(!extractor.getAudioStreams().isEmpty());
+        assertFalse(extractor.getAudioStreams().isEmpty());
     }
 
     @Test