diff --git a/log4j-api/src/main/java/org/apache/logging/log4j/util/PropertiesUtil.java b/log4j-api/src/main/java/org/apache/logging/log4j/util/PropertiesUtil.java
index f5e1ecb..c732b01 100644
--- a/log4j-api/src/main/java/org/apache/logging/log4j/util/PropertiesUtil.java
+++ b/log4j-api/src/main/java/org/apache/logging/log4j/util/PropertiesUtil.java
@@ -316,7 +316,8 @@
 
         private Environment(final PropertySource propertySource) {
             sources.add(propertySource);
-            for (final PropertySource source : ServiceLoader.load(PropertySource.class)) {
+            Class<PropertySource> serviceClass = PropertySource.class;
+            for (final PropertySource source : ServiceLoader.load(serviceClass, serviceClass.getClassLoader())) {
                 sources.add(source);
             }
             reload();