diff --git a/ortools/java/com/google/ortools/Loader.java b/ortools/java/com/google/ortools/Loader.java
index a62799cc97..0cb58be54f 100644
--- a/ortools/java/com/google/ortools/Loader.java
+++ b/ortools/java/com/google/ortools/Loader.java
@@ -7,6 +7,7 @@ import java.net.URISyntaxException;
 import java.net.URL;
 import java.nio.file.FileSystem;
 import java.nio.file.FileSystems;
+import java.nio.file.FileSystemAlreadyExistsException;
 import java.nio.file.FileVisitResult;
 import java.nio.file.Files;
 import java.nio.file.Path;