diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/ConfigurationLoaderTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/ConfigurationLoaderTest.java
index 744b430d8..379552172 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/ConfigurationLoaderTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/ConfigurationLoaderTest.java
@@ -450,6 +450,7 @@ public class ConfigurationLoaderTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testLoadConfiguration_URISyntaxException() throws CheckstyleException {
         mockStatic(ConfigurationLoader.class);
 
diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/MainTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/MainTest.java
index 599af0144..6b5f3edf5 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/MainTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/MainTest.java
@@ -469,6 +469,7 @@ public class MainTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testListFiles_notFile() throws Exception {
         Class<?>[] param = new Class<?>[1];
         param[0] = File.class;
@@ -485,6 +486,7 @@ public class MainTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testListFiles_DirectoryWithNull() throws Exception {
         Class<?>[] param = new Class<?>[1];
         param[0] = File.class;
diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/PackageNamesLoaderTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/PackageNamesLoaderTest.java
index be5ac33ae..fd202777b 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/PackageNamesLoaderTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/PackageNamesLoaderTest.java
@@ -91,11 +91,10 @@ public class PackageNamesLoaderTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testPackagesWithDots() throws Exception {
 
-        Constructor<PackageNamesLoader> constructor =
-                (Constructor<PackageNamesLoader>) PackageNamesLoader.class
-                        .getDeclaredConstructors()[0];
+        Constructor<PackageNamesLoader> constructor = PackageNamesLoader.class.getDeclaredConstructor();
         constructor.setAccessible(true);
         PackageNamesLoader loader = constructor.newInstance();
 
@@ -111,6 +110,7 @@ public class PackageNamesLoaderTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testPackagesWithSaxException() throws Exception {
 
         final URLConnection mockConnection = Mockito.mock(URLConnection.class);
@@ -136,6 +136,7 @@ public class PackageNamesLoaderTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testPackagesWithIoException() throws Exception {
 
         final URLConnection mockConnection = Mockito.mock(URLConnection.class);
@@ -161,6 +162,7 @@ public class PackageNamesLoaderTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testPackagesWithIoException_getResources() throws Exception {
 
         ClassLoader classLoader = mock(ClassLoader.class);
diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/PropertyCacheFileTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/PropertyCacheFileTest.java
index b46b2013a..bc21dbbe4 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/PropertyCacheFileTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/PropertyCacheFileTest.java
@@ -89,6 +89,7 @@ public class PropertyCacheFileTest {
     }
 
     @Test
+    @SuppressWarnings("unchecked")
     public void testException_NoSuchAlgorithmException() throws Exception {
 
         Configuration config = new DefaultConfiguration("myname");