diff --git a/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache b/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
index db0daf0d3f4..4ea86f5cd6f 100644
--- a/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
@@ -22,7 +22,13 @@ import org.glassfish.jersey.media.multipart.MultiPartFeature;
 
 import java.io.IOException;
 import java.io.InputStream;
+
+{{^supportJava6}}
 import java.nio.file.Files;
+{{/supportJava6}}
+{{#supportJava6}}
+import org.apache.commons.io.FileUtils;
+{{/supportJava6}}
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Map;
@@ -521,7 +527,13 @@ public class ApiClient {
   public File downloadFileFromResponse(Response response) throws ApiException {
     try {
       File file = prepareDownloadFile(response);
+{{^supportJava6}}
       Files.copy(response.readEntity(InputStream.class), file.toPath());
+{{/supportJava6}}
+{{#supportJava6}}
+      // Java6 falls back to commons.io for file copying
+      FileUtils.copyToFile(response.readEntity(InputStream.class), file);
+{{/supportJava6}}
       return file;
     } catch (IOException e) {
       throw new ApiException(e);