diff --git a/api/src/main/java/io/kafbat/ui/serdes/builtin/ProtobufFileSerde.java b/api/src/main/java/io/kafbat/ui/serdes/builtin/ProtobufFileSerde.java
index e2fc105b9..8c0ec8369 100644
--- a/api/src/main/java/io/kafbat/ui/serdes/builtin/ProtobufFileSerde.java
+++ b/api/src/main/java/io/kafbat/ui/serdes/builtin/ProtobufFileSerde.java
@@ -408,7 +408,7 @@ private Map<String, ProtoFile> loadFilesWithLocations() {
         files.filter(p -> !Files.isDirectory(p) && p.toString().endsWith(".proto"))
             .forEach(path -> {
               // relative path will be used as "import" statement
-              String relativePath = baseLocation.relativize(path).toString();
+              String relativePath = baseLocation.relativize(path).toString().replace("\\", "/");
               var protoFileElement = ProtoParser.Companion.parse(
                   Location.get(baseLocation.toString(), relativePath),
                   readFileAsString(path)