Index: log4j-api/src/main/java/org/apache/logging/log4j/util/ProviderUtil.java
===================================================================
--- log4j-api/src/main/java/org/apache/logging/log4j/util/ProviderUtil.java	(revision 1517765)
+++ log4j-api/src/main/java/org/apache/logging/log4j/util/ProviderUtil.java	(working copy)
@@ -25,9 +25,14 @@
 import java.util.Properties;
 
 import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.spi.LoggerContextFactory;
 import org.apache.logging.log4j.spi.Provider;
 import org.apache.logging.log4j.status.StatusLogger;
 
+import org.osgi.framework.Bundle;
+import org.osgi.framework.FrameworkUtil;
+import org.osgi.framework.wiring.BundleWiring;
+
 /**
  *
  */
@@ -83,7 +88,11 @@
 
     public static ClassLoader findClassLoader() {
         ClassLoader cl;
-        if (System.getSecurityManager() == null) {
+        Bundle bundle = FrameworkUtil.getBundle(LoggerContextFactory.class);
+        if(bundle != null) {
+          cl = bundle.adapt(BundleWiring.class).getClassLoader();
+        }
+        else if (System.getSecurityManager() == null) {
             cl = Thread.currentThread().getContextClassLoader();
         } else {
             cl = java.security.AccessController.doPrivileged(
Index: log4j-api/pom.xml
===================================================================
--- log4j-api/pom.xml	(revision 1517765)
+++ log4j-api/pom.xml	(working copy)
@@ -44,6 +44,18 @@
       <artifactId>junit</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.osgi</groupId>
+      <artifactId>org.osgi.compendium</artifactId>
+      <version>4.3.1</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.osgi</groupId>
+      <artifactId>org.osgi.core</artifactId>
+      <version>5.0.0</version>
+      <scope>compile</scope>
+    </dependency>
   </dependencies>
   <build>
     <plugins>