diff --git a/app/src/processing/app/SketchController.java b/app/src/processing/app/SketchController.java
index 89f1a3516..ce9e468cc 100644
--- a/app/src/processing/app/SketchController.java
+++ b/app/src/processing/app/SketchController.java
@@ -674,7 +674,7 @@ public class SketchController {
     FileUtils.copy(sketch.getFolder(), tempFolder);
 
     for (SketchFile file : Stream.of(sketch.getFiles()).filter(SketchFile::isModified).collect(Collectors.toList())) {
-      Files.write(Paths.get(tempFolder.getAbsolutePath(), file.getFileName()), file.getProgram().getBytes());
+      Files.write(Paths.get(tempFolder.getAbsolutePath(), file.getFileName()), file.getProgram().getBytes("UTF-8"));
     }
 
     return Paths.get(tempFolder.getAbsolutePath(), sketch.getPrimaryFile().getFileName()).toFile();