diff --git a/slf4j-android/src/test/java/org/slf4j/impl/AndroidLoggerFactoryTest.java b/slf4j-android/src/test/java/org/slf4j/impl/AndroidLoggerFactoryTest.java
index 5c854892..12c0a7a2 100644
--- a/slf4j-android/src/test/java/org/slf4j/impl/AndroidLoggerFactoryTest.java
+++ b/slf4j-android/src/test/java/org/slf4j/impl/AndroidLoggerFactoryTest.java
@@ -26,7 +26,7 @@ package org.slf4j.impl;
 
 import org.junit.Test;
 
-import static junit.framework.Assert.assertEquals;
+import static org.junit.Assert.assertEquals;
 
 public class AndroidLoggerFactoryTest {
     @Test
diff --git a/slf4j-jdk14/src/test/java/org/slf4j/InvocationTest.java b/slf4j-jdk14/src/test/java/org/slf4j/InvocationTest.java
index da76fab3..3db5936a 100755
--- a/slf4j-jdk14/src/test/java/org/slf4j/InvocationTest.java
+++ b/slf4j-jdk14/src/test/java/org/slf4j/InvocationTest.java
@@ -35,8 +35,8 @@ import java.util.logging.Handler;
 import java.util.logging.Level;
 import java.util.logging.LogRecord;
 
-import static junit.framework.Assert.assertNotNull;
-import static junit.framework.Assert.assertNull;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
 
diff --git a/slf4j-jdk14/src/test/java/org/slf4j/issue/LoggerSerializationTest.java b/slf4j-jdk14/src/test/java/org/slf4j/issue/LoggerSerializationTest.java
index 00e75b55..a324f203 100644
--- a/slf4j-jdk14/src/test/java/org/slf4j/issue/LoggerSerializationTest.java
+++ b/slf4j-jdk14/src/test/java/org/slf4j/issue/LoggerSerializationTest.java
@@ -32,7 +32,7 @@ import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
 
-import junit.framework.Assert;
+import static org.junit.Assert.assertNotNull;
 
 import org.junit.Test;
 import org.slf4j.Logger;
@@ -76,8 +76,8 @@ public class LoggerSerializationTest {
         ObjectInputStream in = new ObjectInputStream(is);
         LoggerHolder lh2 = (LoggerHolder) in.readObject();
 
-        Assert.assertNotNull(lh2);
-        Assert.assertNotNull(lh2.getLog());
+        assertNotNull(lh2);
+        assertNotNull(lh2.getLog());
         lh2.getLog().info("You must see this message as a log message");
     }
 
diff --git a/slf4j-simple/src/test/java/org/slf4j/impl/SimpleLoggerTest.java b/slf4j-simple/src/test/java/org/slf4j/impl/SimpleLoggerTest.java
index 4c84762d..66bdbf98 100644
--- a/slf4j-simple/src/test/java/org/slf4j/impl/SimpleLoggerTest.java
+++ b/slf4j-simple/src/test/java/org/slf4j/impl/SimpleLoggerTest.java
@@ -28,8 +28,8 @@ import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 
-import static junit.framework.Assert.assertEquals;
-import static junit.framework.Assert.assertNull;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
 public class SimpleLoggerTest {