diff --git a/org.springframework.core/src/main/java/org/springframework/core/env/MapPropertySource.java b/org.springframework.core/src/main/java/org/springframework/core/env/MapPropertySource.java
index 05eec72261..4d744071be 100644
--- a/org.springframework.core/src/main/java/org/springframework/core/env/MapPropertySource.java
+++ b/org.springframework.core/src/main/java/org/springframework/core/env/MapPropertySource.java
@@ -27,7 +27,7 @@ import java.util.Map;
  */
 public class MapPropertySource extends EnumerablePropertySource<Map<String, Object>> {
 
-	protected MapPropertySource(String name, Map<String, Object> source) {
+	public MapPropertySource(String name, Map<String, Object> source) {
 		super(name, source);
 	}