diff --git a/maven-core/src/main/java/org/apache/maven/project/MavenProject.java b/maven-core/src/main/java/org/apache/maven/project/MavenProject.java
index 7c660da216..5a20200997 100644
--- a/maven-core/src/main/java/org/apache/maven/project/MavenProject.java
+++ b/maven-core/src/main/java/org/apache/maven/project/MavenProject.java
@@ -256,6 +256,8 @@ public class MavenProject
             }
         }
 
+        remoteArtifactRepositories = repositorySystem.getMirrors( remoteArtifactRepositories );
+
         if ( projectBuilderConfiguration.getRemoteRepositories() != null )
         {
             remoteArtifactRepositories.addAll( projectBuilderConfiguration.getRemoteRepositories() );